Teacher and Parent Perception of Biophilic Conditions in Primary-School Environments and Their Impact on Children’s Wellbeing

: The term “biophilia” refers to the intrinsic affinity that humans have towards nature, natural elements and natural processes. Biophilic design theories suggest that the introduction or representation of natural characteristics or elements into the built environment can help enhance people’s health and wellbeing. Primary school buildings are important environments where children spend considerable time. However, there is limited evidence on the impact of their biophilic features on the children themselves and on perceptions of important facilitators of children’s wellbeing, such as teachers and parents. This research aims to investigate whether teachers and parents perceive children to have a preference or desire for specific biophilic characteristics in their school’s physical environment; and whether teachers perceive some biophilic characteristics as having an effect on children’s performance and behaviour. A framework for evaluating biophilic characteristics in primary schools was developed. Two case study primary schools in London and Bath (England, UK) were audited against this framework, and teachers and parents were surveyed. The results suggest that children do have a preference towards the specific biophilic features studied, which is stronger and more demanding when the exposure is higher. For some aspects, teachers’ perception of benefits is also susceptible to the quality of the environment itself.


Introduction
Evolutionary theories suggest that humans are physiologically and psychologically adapted to natural environments since they emerged and long evolved within nature [1], creating adaptive responses to certain stimuli and configurations, mainly regarding food, water and security [2,3].
In their search for comfort and security, humans learned to modify their own physical environment.Rapid industrialisation and the massive migration to cities have precipitated these transformations, leading to highly modified environments which are more comfortable than our original habitat, but also resulting in a disconnection from nature to which we were originally adapted, physiologically and psychologically.
In environmental sciences, "biophilia" explains the intrinsic affinity that humans have towards nature, natural elements and natural processes.It has been proven that introduction or representation of natural characteristics or elements into the built environment can help enhance people's health and wellbeing within our contemporary habitat (e.g., the use of daylight, natural materials or images of nature).
Children, in particular, could be more sensitive than adults to their environment.According to the World Health Organization [4], children consume more air, water and food than adults on a weight proportion; several of their body systems are still growing and therefore very susceptible; they have different behavioural patterns towards the environment which can increase their exposure (to particles and chemicals in dust and soil); and children do not usually control their own environment, since adults do.
Schools are the environment where contemporary children spend up to 60% of their time.Poor school environments can impact children's and teachers' attendance and retention, and therefore also academic performance [5].The concept of 'school environment' encompasses "physical environment", "educational environment" and "social environment" [6]; however, this research focuses mainly on physical conditions.
From an environmental psychology point of view, the design of the physical environment is believed to affect children's perception, learning and behaviour; and conditions the evolution of motor, cognitive and social skills [7].An extensive post-occupancy evaluation on UK primary schools by the RIBA [5] found that "more than 9 in 10 teachers believe school design is important, 1 in 5 teachers have considered quitting because of the condition of school buildings and 91% of teachers feel good design is important to good pupil behaviour".More recently, Barrett et al. [8] evaluated the holistic impact of several aspects of primary-school buildings on children's learning performance, highlighting the importance of optimal physical environments.

Biophilia
Humans have an affinity to those elements and environments which have allowed our development and survival, including sources of water and some landscapes, such as savannah-type settings, forest edges, watercourses, mountains and valleys [2,9].The Prospect-Refuge Theory proposed by Appleton [10] emphasises the psychological affinity humans have for wideness (prospect) and hiding possibilities (refuge), which emerges from our ancestors' safe exploration and wayfinding.As diurnal species, vision developed as our prominent sense, and is the reason why daylight, views, the possibility to see far, and certain colours and patterns are especially meaningful at an unconscious level [9].
There is worldwide research on children's environments related to biophilia.Rice and Torquati [27] surveyed 114 pre-scholars on "preferences for play locations, enjoyment of sensory aspects of nature, exploring nature, and curiosity about nature".Maller [28] studied the importance of children's "hands-on contact to nature" interviewing educators, school principals, and environmental-education-industry professionals, who recognised benefits on "self-esteem, engagement with school and a sense of empowerment".Similarly, Lee and Park [1] evaluated which biophilic design characteristics could apply to a children's library through case studies and surveys, concluding that the needs of these environments are to provide the experience of nature, shelter and open spaces, multi-functional spaces, and to promote sensorial experiences.

Nature and Restorativeness
The Attention Restoration Theory (ART), introduced by Kaplan and Kaplan in 1995 [29], proposes the concept of 'restorative environment' as that which "promotes (and not merely permits) restoration" [30] (p.273).Cognitive functioning was proved to be restored with simple interactions with nature, comparing the cognitive response of young adults after a 50-55-min walk through an arboretum to a traffic-heavy street, and after 10 min of watching an image of a natural landscape to an urban landscape [31].Children exposed to the natural environment presented better and faster responses [32], giving evidence of an association between cognitive restoration and eye focus direction.
In medicine, early studies associated views to nature/quality of the view with patients' faster recovery in hospitals [24,33].More recent research suggests links between views to nature and the reduction of pain [34,35].Other studies associate this link to stress recovery [36].
Bagot, Allen and Toukhsati summarise evidence proposing four requirements for an environment to be restorative: "being away (physical or psychological)", "compatibility (with purpose)", "fascination (cognitive or physical)", and "extent (scope and connectedness)" [37].They examined and scored four studies and concluded that the indoor environment was less restorative than outdoor/natural, with the amount of vegetation being the only meaningful variable determining restorativeness, and that adults' and children's restoration might not follow the same environmental determinants.

Nature Deficit in Contemporary Children
Contemporary children might be suffering from what Louv calls "nature-deficit disorder": an insufficiency of 'primary experiences' in nature, crucial for their development.Multisensory experiences in nature, quietness and 'space to wander' are his highlighted aspects.He also suggests that one of the main causes of nature-deficit is parents' fear of safety [38].
Urban children tend to be more cooperative and creative in their play when exposed to natural settings, in comparison to spaces with less trees and grass or manufactured play areas [21,38].Chawla et al. found that children identify natural spaces with freedom, happiness and opportunities to confront challenges [39].
Within the learning environment, school playgrounds with the presence of greenery work as refuge for stress-reduction, restoration and enhance children's social skills.Exposure to nature is proved to be related also to benefits such as "improved focus, vitality, productivity and reduced stress, factors that may enhance the academic performance of children" [40] (p.16).Views of nature in classrooms were found to generate a positive perception of courses and better grades [41,42].Han [43] argues that students are vulnerable to suffering from mental fatigue, this being the reason why their "ideal learning environment should promote attention focusing, reduce mental fatigue and psychophysiological stress, and ideally even improve health and encourage better learning" [43] (pp.659-660).In his study, Han measured the subjective and objective influence and variations of high-school students during one semester in a classroom with plants.Using a control group, the students were surveyed, and their examination scores and behavioural records were collected.They concluded that "six limitedly visible plants in the classroom had an immediately significant and positive influence on the students' perceptions of preference, comfort and friendliness" [37] (p.680).It is relevant to consider that in this type of study there is a possible Hawthorne Effect, where the impact of a positive response may occur only due to the modification of the environment, independently from the characteristics of the modification itself [44] which could play a role as well.

Existing Frameworks and Classifications for Assessing Biophilia in the Built Environment
In the last two decades, several authors have presented classifications which describe and synthesise those characteristics that define, in their view, biophilic design.These are interpretations of the built environment, where similar strategies and attributes are presented, with some variations in the categories used.
Kellert, also known as the 'godfather of biophilic design', presented several frameworks throughout his career.The first one, from 2002 [45], defined three categories for experiencing nature: "direct experience", which is related to non-human natural settings; "indirect experience", to refer to human-made natural environments; and "symbolic experience" for the appreciation of nature through books and television.The first two classifications were later used by himself with a different meaning, whereas the appreciation of nature through books and television was not mentioned again by other frameworks.
In a totally different approach, in 2008 [46] Kellert identified 70 "biophilic design attributes", which were classified into six strategies: "environmental features"; "natural shapes and forms"; "natural patterns and processes", with attributes such as "growth and efflorescence" and "dynamic balance and tension"; "light and space", with seven different attributes related to light and five to space; "place-based relationships", with attributes such as "avoiding placelessness" or "spirit of space"; and "evolved human-nature relationships".With this framework, Kellert proposes that the representation of nature and sense of belonging to the place can play a role for biophilia as well, which goes beyond the presence of natural elements per se.
In the same publication, Heerwagen and Gregory [47] examined seven aesthetic qualities from nature which could be evoked by architecture.New proposed attributes are "motion" and "sense of freeness".The authors claimed that nature is always on the move and that people enjoy watching movement, including watching people move in an urban landscape.Regarding "sense and freeness", the authors mention two particular aspects: the psychological and physical sense of freedom generated by the lack of boundaries between spaces, and the simple action of being able to open a window in one's environment, signifying control and therefore freeness.Some attributes from this framework have similarities with Kellert's from the same publication.
Terrapin Bright Green developed in 2014 [48] an extensive research based on the work of Kellert, Alexander, Heerwagen, Kaplan, Kaplan and Ulrich, among others.Here they presented 14 "patterns of biophilic design" under the categories "nature in the space", "natural analogues" and "nature of the space".One of the main novelties of this framework is that for the first time, the attributes (or patterns) are mapped against their effect on people's health and wellbeing.They classified the evidence into three types: stress reduction, cognitive performance and emotion, mood and preference.
In his last book [9], Kellert presented and described a compacted list of 25 "attributes of biophilic design".This framework brings the names of the categories from his first classification of 2002 but framed differently.For example, "direct experience" refers to elements from nature and not necessarily "non-human natural spaces", and "indirect experience" does not refer to botanical gardens of cultivated crops, but to representations of nature such as images, materials, and the simulation of natural elements.
In the same year, biophilic design entered into the field of building certifications.The International Living Future Institute developed a Biophilic Design Toolkit [49], as part of the requirements for the Living Building Challenge Certification.The categories and attributes used reframe Kellert's, proposing a series of design guidance and tools to implement them at the different project design phases.Simultaneously, the WELL Building Standard [50], which evaluates the impact of buildings on the health and wellbeing of its occupants, also included a few aspects of biophilia under the categories Mind and Light, some as "preconditions" and others as "optimisations".This is the first framework that introduces criteria for sufficiency.
Overall, the existing frameworks share similar strategies and attributes, with a clear tendency to use the concepts of "direct experience", "representation" and "spatial configurations".Except for WELL, which only considers very few aspects of biophilia, existing frameworks work as classifications in the way of checklists without providing priorities or hierarchies.They do not argue whether, for example, the direct presence of daylight or plants have a stronger impact than daylight simulation or nature-like patterns.Most frameworks also have no guidance to sufficiency, with little evidence on how biophilia can be achieved.And there is limited discussion on differences in populations.For instance, in existing frameworks, no particular consideration is taken for the way children perceive or experience the built environment, the physical spaces used mainly by children or how the effect of the built environment on children might vary in comparison to adults.Furthermore, there is limited research on perceptions of parents and teachers on the impact and role of biophilic features in school environments on children.These views are important when considering that parents' and teachers' actions and beliefs can directly or indirectly affect children's wellbeing, for example via impact on exposures (e.g., access to daylight and views might be controlled by teachers in classrooms) or child behaviours or interests.

Aims and Objectives
The aim of this study is to investigate whether teachers and parents perceive children as having preference or desire for specific biophilic features in their school's physical environment, and whether teachers perceive certain biophilic characteristics as affecting children's performance and behaviour.
This study focuses on those biophilic aspects easily identifiable by non-specialist publics.Likewise, 'preference', 'performance' and 'behaviour' are commonly used and widely understood terms that were selected as easily recognisable aspects related to wellbeing.Teachers' opinions are particularly relevant since they have some control over the classroom's environment (e.g., windows and blinds); and parents' opinions are relevant as they can reflect on what children discuss about their school environment at home.Specifically, the objectives were as follows: 1.
To develop a framework to evaluate biophilic aspects of school environments which allows categorising, comparing, and contrasting different school environments in a way which could be easily communicated with parents and teachers.2.
To evaluate teachers' perceptions about the role of specific biophilic features in children's performance and behaviour at school.

3.
To identify aspects of children's preferences towards biophilic features, as perceived by parents and teachers.

Study Design Overview
The methodology followed involved: 1.
The formulation of a bespoke framework for evaluating biophilic conditions in urban primary schools.

2.
Audits of two case studies against this framework.

3.
Surveys of teachers and parents about their perception about children's preference, performance and behaviour in relation to certain biophilic attributes.Due to ethics and data protection, participants were not asked to disclose details about specific children or health conditions.

Development of a Framework for Evaluating Biophilic Conditions in Urban Primary Schools
Based on the existing attributes and classifications from existing frameworks presented in Section 1.4, a new framework with a focus on children and primary school environments was formulated.
A concise selection of practical attributes, which could be suitable for assessing the primary-school physical environment, were identified and classified under "elements" or "spatial experiences", and "direct experience" or "representation" (see Table 1).For each of these attributes, criteria were defined to determine what was considered as "achieved", "partially achieved", or "not achieved" (see Table 2).This framework does not aim to define minimum performance grades for biophilia (further research is needed to tackle this); nevertheless, it gives a basic evaluation of the school's biophilic condition.

Attribute
the following: mous and generally positive opinion about dren's preference, performance and behavding windows and blinds, which were pergenerally not well rated from school A. s such as "distraction", "disruption", or "I wn"; school B teachers used "enjoy", "preake their brains up". the perception of negative impact for any e "plants in classrooms" for school A, and r school B. ncertainty, but interestingly, some teachers ctful with objects and toys made of wood e easily, considering them disposable.es decoded.The teachers' responses (T) are (Q, columns) are subdivided into columns, f wellbeing analysed (teacher's preference, ildren's performance, and perceived chilloured icons rating the perceived impacts eing aspect they were referring to.E.g., the on as they often look out and stare which them to focus" was decoded as (a) "more ldren's behaviour; (b) "remind them to foerformance; and (c) overall: perceived chilestion referring to children's performance was manifested too, marked with a green ns under "performance" and "behaviour".

Teachers' Surveys
Overall, the results from the survey show the following:

•
Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green icon under "children's preference", and red icons under "performance" and "behaviour".

Teachers' Surveys
Overall, the results from the survey show the following:

•
Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green icon under "children's preference", and red icons under "performance" and "behaviour".There are very few nature-like textures and patterns within the building or not all children have access.
Do not exist.

Attribute
the following: mous and generally positive opinion about dren's preference, performance and behavding windows and blinds, which were pergenerally not well rated from school A. s such as "distraction", "disruption", or "I wn"; school B teachers used "enjoy", "preake their brains up". the perception of negative impact for any e "plants in classrooms" for school A, and r school B. ncertainty, but interestingly, some teachers ctful with objects and toys made of wood e easily, considering them disposable.es decoded.The teachers' responses (T) are (Q, columns) are subdivided into columns, f wellbeing analysed (teacher's preference, ildren's performance, and perceived chilloured icons rating the perceived impacts eing aspect they were referring to.E.g., the on as they often look out and stare which them to focus" was decoded as (a) "more ldren's behaviour; (b) "remind them to foerformance; and (c) overall: perceived chilestion referring to children's performance was manifested too, marked with a green ns under "performance" and "behaviour".

Teachers' Surveys
Overall, the results from the survey show the following:

•
Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green icon under "children's preference", and red icons under "performance" and "behaviour".

Teachers' Surveys
Overall, the results from the survey show the following:

•
Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green icon under "children's preference", and red icons under "performance" and "behaviour".

Colour palette
Generally, colours are not strident and excessive (e.g., too many different contrasting and vibrant colours); though some bright colours in specific elements exist.Blues, green and/or earth tones stand out.Interior walls are light in colour (preferably white) and not blocked by excessive billboards.Exterior: green stands out.
There is a combination of colours between light walls, earth tones, blues and greens; but also, strident colours stand out.
Overall, the colour palette is not close to blues, green or earth tones.Only strident or grey colours stand out.Interior walls are not light in colour or absolutely blocked by excessive billboards and other elements.

Shapes and forms
All children have access to shapes and forms in the building elements such as: botanical motifs, tree and columnar supports, shells and spirals, oval and tubular forms, arches, vaults, domes, shapes resisting straight lines and right angles.
There are very few nature-like shapes and forms within the building, or not all children have access.
Not existing.

Views out
Both conditions are met: 1.
Existing view of natural landscape, far away view (including broad urban views), natural elements (e.g., plants), or intense pedestrian traffic.

2.
All children have views out from their seats.
Any of the following conditions are met: 1.
Existing view of non-natural close elements or close street without pedestrians.

2.
Existing view out but not from all children's seats or not at children's height.

3.
Blinds are usually kept down.
Any of the following conditions are met: 1.
No views out.

2.
Windows to corridors, atriums or to other indoor room.

Infrastructure for outdoor classes
There is infrastructure which allows outdoor classes, including shaded areas, space for seating, non-noisy environment, outdoor-boards or other outdoor-equipment.
There is little infrastructure but it is still possible to have classes outdoors.
There is no infrastructure (e.g., no shades or space to sit the whole class, and it is too noisy to work there).

Promotion of healthy commuting
There is enough space dedicated to parking bikes/scooters for more than half the number of children.
There is enough space dedicated to parking bikes/scooters for more than half the number of children.
There is no parking space for bikes/scooters.

Gardening sessions
Activity taking place on a regular basis for all children.The school has planters and/or gardening pots which children are allowed to interact with.
Activity taking place very sporadically or only for some children.The school has planters and/or gardening pots which children are allowed to interact with.
Not existing.

'Forest School' activities
There are 'Forest School' type activities on a regular basis for all children.
There are some 'Forest School' type activities seldom, very sporadically, and/or only for some children.

Attribute
the following: mous and generally positive opinion about dren's preference, performance and behavding windows and blinds, which were pergenerally not well rated from school A. s such as "distraction", "disruption", or "I wn"; school B teachers used "enjoy", "preake their brains up". the perception of negative impact for any e "plants in classrooms" for school A, and r school B. ncertainty, but interestingly, some teachers ctful with objects and toys made of wood e easily, considering them disposable.es decoded.The teachers' responses (T) are (Q, columns) are subdivided into columns, f wellbeing analysed (teacher's preference, ildren's performance, and perceived chilloured icons rating the perceived impacts eing aspect they were referring to.E.g., the on as they often look out and stare which them to focus" was decoded as (a) "more ldren's behaviour; (b) "remind them to foerformance; and (c) overall: perceived chilestion referring to children's performance was manifested too, marked with a green ns under "performance" and "behaviour".

Teachers' Surveys
Overall, the results from the survey show the following:

•
Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green icon under "children's preference", and red icons under "performance" and "behaviour".

Teachers' Surveys
Overall, the results from the survey show the following:

•
Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green icon under "children's preference", and red icons under "performance" and "behaviour".

Spatial variability
At least three of these conditions are met: 1.
Different accesses from the street to the school.

2.
Several routes within the school or circular routes.
Sequences of tight and broad spaces or diversity of circulation areas (e.g., mix between corridors and distribution halls).
Two or less of the previous conditions are met.
None of the previous conditions are met.There is a lack of spatial complexity (e.g., the access to different spaces is only through a common corridor, unique routes, straight corridors, and only one type of circulation).

Prospect
There are wide views beyond the limits of the school for all children.
There are some wide views within the limits of the school and/or only available for some children.
There are no wide views within the limits of the school or beyond.

Refuge
There are many possibilities for children to find a quiet and relatively out-of-sight spot while playing.
There are a few possibilities for children to find a quiet spot relatively out of sight while playing.
There are almost no possibilities for children to find a spot relatively out of sight while playing.

Active design
There are stairs that all kids use every day or there are: 1.
Existing opportunities to walk and wander (e.g., spaces not too closely connected).2.
Steps, slopes and/or topographic variations in playgrounds.
There are stairs but not all children use them every day and/or there are not many opportunities for wandering or there are no topographical variations in the playgrounds.
There are no stairs, no opportunities for wandering (e.g., spaces too close together, all activities during the day take place in the same physical space), and no topographic variations on playgrounds.

Possibility to run
The playground is big enough to allow children to run, there are possibilities for children of different ages to have separated areas/playgrounds, and the paving surface is even and not too hard.There are not too many protruding elements around.

Some of the previous characteristics are not met.
There are no possibilities for children to run because the size of the playgrounds do not allow it or it is too dangerous (e.g., types of surfaces, protruding elements around) or because children of all ages have to share the same area at the same time.

Possibility to climb
The equipment in the playground (or sports room) allows a diversity of possibilities for climbing for all children.
The equipment in the playground (or sports room) allows some possibilities for climbing but not too much variation or they are not available for all children.
There are no possibilities (e.g., no playing equipment in playground).

Case Studies and Audits
Two case study primary schools were visited and audited against the new framework.The aim of the audits was to establish and compare the overall biophilic situation of the case studies, and to give background context to the data collected in these schools.
At the moment of the study, school A (London) had 300 (approx.)pupils, 18 teachers and teacher assistants and 23 other school staff.School B (Bath) had 210 (approx.)pupils, 22 teachers and teacher assistants and 7 other school staff.

Surveys 2.4.1. Teachers' Survey
The participants were current main teachers or assistants.The call for participation was sent by email to the headteachers of the respective schools, who could opt for face-to-face, paper-based, or online-based formats.School A's headteacher handed paper-based versions at a teachers' weekly meeting and collected them two days later.Five responses were obtained from the estimated 15-18 teachers invited.The researcher was later invited to a summer fair where three more teachers participated face-to-face.School B's headteacher delivered paper-based questionnaires to the teachers after the school year ended and returned them to the researcher scanned by email.Six responses were collected from school B.
The questionnaire consisted of four open questions that aimed to evaluate the following: 1.
Whether certain biophilic features have a perceived impact on children's preference, performance, and behaviour, through the lens of teachers.

2.
What possible mechanisms could be causing the perceived impact.

3.
Whether the school physical environment influences teachers' perception of the impact of the biophilic features on children.
Each question on the questionnaire targeted a different physical element from the school environment, associated to one or several biophilic attributes from the framework: "windows", "blinds up", "materials and finishes" and "plants in classrooms" (see Table 3).
The questions asked about their perception of the effect of these conditions on children's preference, performance, and behaviour.Other aspects that arose, such as teachers' own preference, were also considered in the analysis.The analysis of this survey consisted of two parts: an overall coding analysis to determine whether the impacts were perceived, and if so whether these were positive or negative and a detailed qualitative analysis to collect the specific perceived effects on children's preference, performance and behaviour.

Parents' Survey
Parents were invited to participate through the parents' social media network and face to face in school social events.Parents from school A were invited in person during the school's summer fair.Parents from school B were invited through a parents Facebook group which included an introductory note written by one parent and a link to an online form served by SurveyMonkey.com.In total, 17 responses were collected from school A and 6 from school B.
The parents' questionnaire consisted of three checkbox questions aiming to capture the parents' perception on children's preferences, desires, and comments related to 8 attributes selected from the framework: natural light, water, plants, animals, views out, natural materials, images of nature, and colour palette (see Table 4).Question 1 includes options about non-physical aspects (activities and people, which are presumed to be easily mentioned by children) to confirm whether the children talk about their school environment at home.The analysis of this survey consisted of counting the sum of votes on each checkbox in order to a.
confirm whether children comment on school environments at home; b.
identify and compare which elements of biophilia are more perceived, commented and desired by the children; c.
identify differences on these between schools, and to analyse whether the school could have an impact on the type of elements mentioned and on the awareness of biophilia.

Audits
Table 5 summarises the audits' results.Overall, in School A, 3 attributes were considered achieved (all representational), 11 partially achieved, and 7 were not achieved.Whereas for School B, 15 attributes were achieved, 4 partially achieved, and 2 were not achieved (both representational).Therefore, school A can be considered as a 'low-biophilic school' and school B a 'higher-biophilic school'.

Teachers' Surveys
Overall, the results from the survey show the following:

•
Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green icon under "children's preference", and red icons under "performance" and "behaviour".

Teachers' Surveys
Overall, the results from the survey show the following:

•
Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green icon under "children's preference", and red icons under "performance" and "behaviour".

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positiv the impact of the biophilic features on children's preference, perform iour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, ceived positive by school B teachers and generally not well rated While teachers from school A used words such as "distraction", "d don't think they notice the blinds are down"; school B teachers use ferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative condition.

•
The most positively rated conditions were "plants in classrooms" f "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingl commented that children are more respectful with objects and toy than plastic, which they throw away more easily, considering them Figure 1 summarises the teachers' responses decoded.The teachers' r expressed in the rows.The different questions (Q, columns) are subdivid each column referring to the different aspects of wellbeing analysed (teac perceived children's preference, perceived children's performance, and dren's behaviour).For each question, the coloured icons rating the pe were allocated under the corresponding wellbeing aspect they were refer quote of T1 for Q1 who says: "More disruption as they often look out means we have to stop the lesson and remind them to focus" was decod disruption": perceived negative impact on children's behaviour; (b) "rem cus": perceived negative impact on children performance; and (c) overal dren's positive preference.So, despite the question referring to childre and behaviour, positive children's preference was manifested too, mark

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived chil-

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green

Teachers' Surveys
Overall, the results from the survey show the following:

•
Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to fo-

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positiv the impact of the biophilic features on children's preference, perform iour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, ceived positive by school B teachers and generally not well rated While teachers from school A used words such as "distraction", "d don't think they notice the blinds are down"; school B teachers use ferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative condition.

•
The most positively rated conditions were "plants in classrooms" f "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingl commented that children are more respectful with objects and toy than plastic, which they throw away more easily, considering them Figure 1 summarises the teachers' responses decoded.The teachers' r expressed in the rows.The different questions (Q, columns) are subdivid

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".

•
Teachers from school B did not express the perception of negative impact for any condition.

•
The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B.

•
"Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A.

•
The most conflicting responses were regarding windows and blinds, which were per-

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about

Teachers' Surveys
Overall, the results from the survey show the following: • Teachers from school B had a more unanimous and generally positive opinion about the impact of the biophilic features on children's preference, performance and behaviour than teachers from school A. • The most conflicting responses were regarding windows and blinds, which were perceived positive by school B teachers and generally not well rated from school A. While teachers from school A used words such as "distraction", "disruption", or "I don't think they notice the blinds are down"; school B teachers used "enjoy", "preferred", "fascinated", "engaged", and "wake their brains up".• Teachers from school B did not express the perception of negative impact for any condition.
• The most positively rated conditions were "plants in classrooms" for school A, and "plants in classrooms" and "windows" for school B. • "Materials and finishes" showed greater uncertainty, but interestingly, some teachers commented that children are more respectful with objects and toys made of wood than plastic, which they throw away more easily, considering them disposable.
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns, each column referring to the different aspects of wellbeing analysed (teacher's preference, perceived children's preference, perceived children's performance, and perceived children's behaviour).For each question, the coloured icons rating the perceived impacts were allocated under the corresponding wellbeing aspect they were referring to.E.g., the quote of T1 for Q1 who says: "More disruption as they often look out and stare which means we have to stop the lesson and remind them to focus" was decoded as (a) "more disruption": perceived negative impact on children's behaviour; (b) "remind them to focus": perceived negative impact on children performance; and (c) overall: perceived children's positive preference.So, despite the question referring to children's performance and behaviour, positive children's preference was manifested too, marked with a green icon under "children's preference", and red icons under "performance" and "behaviour".

Parents' Surveys
When asked about whether their children talk about their classroom environment at home (Figure 2, Table 6), the most popular responses were related to their classmates, teachers and activities.This confirms the fact that children actually speak about their school environment at home.From the other options, school A parents mentioned aspects Relevant statements at the option "other" were "If they had the option to provide views, I am sure they would engage", "loves water & aquatic plants & animals, and looking after his plants at home".
When parents were explicitly asked about natural elements (Figure 4, Table 8), the most popular answer was "plants" (24% response rate for school A and 83% for school B).Especially in school B where they actually have plants everywhere in the school.Again, for this question, most parents from school A left it empty and the rest of the options were smoothly distributed.The second most selected options for parents from school B were "water features", "trees" and "natural materials" (33% each).The only option not selected by school B parents was "images of nature or particular views".
Relevant statements in the option "other" for this question were "an indoor waterfall", "fish" and "to see the sky".

Overall Comparison of Results
A framework to evaluate primary school environments based on their success in implementing biophilic design (objective 1) was developed, based on the literature review and its adaptation to school environments.Performance and behaviour (objective 2) were analysed through the teachers' survey and preferences (objective 3) through the surveys to teachers and parents.Overall, results suggest that the biophilic features analysed have a perceived impact on children's performance and behaviour, and that there are differences from "low-biophilic" and "higher-biophilic" schools (represented by school A and school B, respectively). Performance: • According to teachers, children have a preference towards windows, which leads to some types of distraction.Therefore, windows were negatively qualified by some teachers from school A, but considered very positive by teachers from school B. • Views out, natural materials and plants were perceived as promoting observations, curiosity and discussions. Behaviour: • Teachers from both schools agree that children behave carefully and respectfully towards plants and objects made of natural materials (i.e., wood).Also, they agree that plants are calming for the children.According to parents, children comment more on activities and people than on physical characteristics of the physical environment.A parent's comment at the survey summarises it: "Children do not tend to talk about the fixed features, more on people".
However, though to a lesser extent, children do comment on the school's physical characteristics.Contrasting parents' perspectives, children from school A mention biophilic features much less often than children from school B. Besides, children from school B comment more on features classified in the framework as "direct experience" (i.e., natural elements, environmental conditions, and views), a category in which this school was highly valued in at the audit; while students from school A comment more on features from the "indirect experience" category (i.e., images and colours).
Regarding children's desire, 35% of parents from school A do not know what children would want to change or desire at their school environment, while all parents from school B had an answer.Although the audit result considered that school B had a higher biophilic condition compared to school A, 83% of parents from school B expressed that their children would like more plants, while only 24% of parents from school A did.

Key Findings 4.2.1. Teachers' Awareness
On some aspects, teachers from the "higher-biophilic" school perceive more benefits and seem more sensitive to the school's environment conditions and their effect on children than teachers from the "low-biophilic" school.For instance, the former expressed awareness on the benefits of views out and fresh air, whereas the latter manifested little awareness and made comments such as "I don't think they notice" regarding whether the blinds were down or up.

Children's Awareness and Demand
Results suggest that children's preference for biophilic features is stronger when the exposure is higher.Hypothetical reasons could be: a.
The richer the environment, the higher their understanding, awareness of biophilic features and desire for other features and expectations.b.
The role that teachers play in stimulating awareness.Teachers could be more sensitive too, due to the environment where they work.

Design Effectiveness vs. Impact of the Actual Element
Teachers' perception of the impact of biophilic features on children's wellbeing could be restricted by inadequate building design (e.g., lack of windows shading, leading to glare).In this context, "blinds up" were perceived as undesired and perturbing the general performance of children, when actually glare might have been the cause.On the other hand, parents expressed that children do want more daylight and teachers themselves believe children do have a preference for windows.Another possible justification for the reported misbehaviour could be that children without enough exposure to certain biophilic features, in need of restoration or biophilic fulfilment "get distracted" with the views out and daylight because a.
they do not usually have them, b.
their biophilic needs are not satisfied, c.
they associate these biophilic features with the playground environment, space where they experience movement, restoration, and where they have more exposure to biophilic features.

Role of Teachers
The results from the teachers' surveys evidence their fundamental role in the control of the environmental conditions and on the effectiveness of the biophilic attributes through encouragement of observation and the activities performed.
The previous research findings are tentative, since the samples were limited.Further research should tackle these key points to confirm or reject the hypothesis formulated.

Findings in Relation to the Literature
The findings in this study support Lee and Park's [1] principles for space design in children's libraries based on biophilic design patterns, extending them to the wider school environment (classroom and patio).In particular, the offer of the experience of nature, shelter and open space, and a multisensory approach.This study also evidences the role of "fascination (cognitive or physical)" in restorativeness described by Bagot, Allen and Toukhsati [37] and the positive influence of natural elements in students' performance as described by Han [43].The literature also suggests that a lack of natural experiences could lead to a lesser care of the natural environment [3,38,[51][52][53][54], which could somehow be reflected in this study regarding objects made out of natural materials vs. synthetic, since the former are perceived to be more respected.This could also be due to the extended use of disposable plastic that children encounter every day.
Han [43] also emphasises the importance of a learning environment which reduces stress and advocates for children to concentrate; it is evident in this study that an environment of discomfort, such as when glare is present, can lead to misbehaviour.A possible reason for children's reported misbehaviour in the presence of daylight could simply be the impossibility to relocate (i.e., move away) when glare perturbs them.Parpairi [55] found that visual satisfaction of students in Cambridge libraries was not associated to the actual measured light levels and was high even under uncomfortable situations (e.g., glare) if there were good views of landscape and the person had the option to move.Adaptation theories, referring to thermal comfort [56,57], could have a role here too.Baker [58] depicts this situation in his "general theory of environmental comfort" as the relationship between adaptive opportunities and stress, highlighting the importance of providing relocating opportunities to users.In the case of school A, not having the option of relocation while being affected by glare might be the cause for children's misbehaviour.
Lastly, the data gathered provided some new elements of nature to consider, which had not been covered in the existing biophilia frameworks, such as sky views and shades.

Contributions, Limitations, and Future Research Directions
This study is relevant to different disciplines including designers, teachers, school authorities, and policy makers.Below there are some reflections that can be of interest to those keen to conduct similar studies to confirm the findings.

About the Proposed Framework
This study developed a new biophilic framework of analysis which focuses on features specifically applicable to primary school environments, and which allows a basic evaluation of the school's biophilic conditions under a fulfilment criterion.However, it needs further testing in a diversity of school environments and with a diverse range of auditors.A quantifiable set of criteria for evaluating the biophilic attributes would benefit this framework.Further research could target ways to quantify the dose and length of exposure of the different features, and the repercussions that these will have on the impact on children.This could include minimum areas of vision, times for exposure, and percentage rates, etc.

•
Sample: The samples (schools and participants) were limited.A larger number of schools and a broader diversity of biophilic conditions could enrich the results.

•
Demographic information: Questionnaires in this study were kept short to reduce unresponsiveness; therefore, demographic information was not collected.Gathering information related to gender, age, and socioeconomic context could capture aspects that could impact the results as well.• Asking children: Nobody better than children could know what they prefer or desire.
This research suggests that (a) parents are not always sure about children's desire towards their school's physical environment and (b) teachers might confuse children's desire and biophilic needs with discomfort issues caused by inadequate design.Teachers' opinions about the impacts on children wellbeing varies as well (e.g., several teachers consider that views out have a strong impact, while others believe children do not realise whether blinds are down or up).As Bagot, Allen and Toukhsati say: "The inclusion of children in the understanding of their environments is warranted and is likely to give rise to elements not considered by adults thus far" [37] (p.8).

•
Experimental studies: Future research could use experimental variables, such as controlling blinds, exposing children to different types of views out, different lighting and glare conditions, options for relocation, testing performance, observing children behaviour and surveying teachers and children.Experimental studies with vulnerable populations (children) would require stricter ethical considerations but would provide very valuable information.

Other Considerations
• Location and socio-economic factors: Future research with a larger sample of schools could investigate whether some factors such as city size, socio-economic factors related to location, proximity to green areas or natural landscapes, and/or the biophilic condition of the city itself have a relevant impact on the results.

•
Role of parents: This research focused on the biophilic conditions of school environments, since it is here where children spend most of their time after home; but further information could have been identified on the time at home and on weekends, in terms of whether children ever experienced "direct nature" (in the sense of Louv [38]).While in this study the role of teachers in encouraging the observation of biophilic features for children was considered, the role of the parents was not.Research is needed on the parents' own relation to nature and how much this influences the school selection.

•
For designers: This research exposes the impact that inadequate design and discomfort can have on teachers' and children's perception of biophilic features.It also highlights the relevance of providing opportunities for restoration and changes of focus, not only in playgrounds but also in classrooms.The framework proposed in this study can be used as a tool to support the design process.

•
For teachers and headteachers: the study highlights the significant role of teachers in managing classroom environmental conditions (e.g., use of blinds) and in enhancing biophilia features/awareness through the encouragement of observation and promotion of discussion.Recommendations include incrementing the opportunities of being outside (e.g., outdoor curricular activities) and including more biophilic features in classrooms (e.g., wooden furniture).

•
For policy: Biophilic design is suggested to be an essential consideration for the correct development of children's wellbeing.This implies not only infrastructure (e.g., proper space for outdoor classes and required equipment, recondition of playgrounds, and use of natural materials) but also teachers' encouragement of biophilic activities (e.g., gardening, active commuting).

Conclusions
This mixed-method study focusing on teachers' and parents' views suggests that the school's physical environment could impact children's preference, performance and behaviour.Results revealed that a higher biophilic environment increases teachers' and children's sensitivity, awareness and demand towards biophilic features themselves.Furthermore, teachers who were exposed to biophilic features had a positive perception of their effects.Similarly, teachers and parents from schools where children are more exposed to biophilic elements perceived that their children are more aware and comment more on these types of elements than children who are less exposed.Additionally, inadequate design of the building (e.g., insufficient windows shading), which may lead to discomfort (e.g., glare), could have an effect on the perception of negative impact of biophilic attributes (e.g., daylight, views out).This study, therefore, has implications for design and for educational policies.This study's contribution to the research field also includes a bespoke framework for biophilic design in primary school environments which allows biophilia-oriented evaluations of existing school buildings or could be used as a tool to aid the design stage.Furthermore, the combination of audits and surveys can enhance the understanding of how the perception of biophilic features could be conditioned by the physical environment, and how this could impact children's preference, performance and behaviour.
Further research should examine the reasons that determine children's preferences and demands for biophilic features when exposed to higher or lower biophilic environments (e.g., better understanding, expectations, and role of adults).The role of parents on the promotion of biophilia, their own biophilic preferences and any relation to biophilia when choosing their children's school could be considered too.

Figure 1
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns,

Figure 1
Figure 1 summarises the teachers' responses decoded.The teachers' responses (T) are expressed in the rows.The different questions (Q, columns) are subdivided into columns,

4. 1 . 1 .
In Relation to Objective 2: Teachers' Perception of Certain Biophilic Features on Children's Performance and Behaviour

4. 1 . 2 .
In Relation to Objective 3: Children's Preference towards Biophilic Features, as Perceived by Teachers and Parents

Table 1 .
Summary of attributes selected and the proposed classification.

Table 2 .
Criteria to evaluate levels of fulfilment for each attribute.

Table 3 .
Questions from the teachers' questionnaire, their biophilic physical aspects associated and the relation to the framework.

Table 4 .
Questions from the parents' questionnaire and the relation to the framework.The options to be selected were accompanied by checkboxes.
Water features, plants, natural materials, images of nature, and colour palette.

Table 5 .
Summary of the audit results.