<prompt> Recommended doors windows area of floor area in a school class must be:10152025  <response>: Healthful school environment: Minimum recommended standards:- 1 classroom- 40 students Doors and window: Doors and window area 25 of floor area Per capita space 10 sq. feet Desk- minus type Natural light from left side 1 urinal per 60 students 1 sanitary latrine per 100 students. 