I was looking at the work of Daniel Stokols, an environmental psychologist, to see if I could find any work on how buildings and their design impacts reactions of students.
What I did find was the Jigsaw Classroom, a cooperative learning technique. The technique was developed to help teach in racially diverse classrooms and avoid situations like the Columbine massacre developing.
The idea is to get students to work in teams in such an effective manner, with each student acting as the proverbial vital piece of the jigsaw, that completes the puzzle. In this technique all members of the team learn to respect the importance and contribution of every other team members, learn to work with them, overcoming distrust and fear. Each person reliases that no one can be a freeloader or minimise the work of others.
It should be possible to adapt this method to tackle any kind of divisiveness based on difference of gender, sexual orientation, race, religion, age and even disability.
I find it amazing that there are such innovative techniques to help delvier better teaching!