Classroom density may be a more important planning consideration than size. The lower middle range for human social distance is 7 feet--not met in most classrooms containing 20 to 25 students. Students need ample space, since crowding causes behavior problems and increased maintenance costs. (Contains 10 references.) (MLH)

Better physical conditions produce better student outcomes. Other factors affecting a school's physical environment and academic productivity include school structure, school size, teacher-pupil ratio, school location, grade-level configuration, and classroom size. Building or remodeling schools according to obsolete images is fiscally and…