Complex sentence: The school plan is designed around a central wheel-the rotunda to facilitate it's mentally handicapped students with navigation-with hallways holding classrooms, the gym, fine arts and media center extending like spokes from the central area.
Split into simpler sentences: The school plan is designed around a central wheel-the rotunda-to facilitate it's mentally handicapped students with navigation. Hallways holding classrooms, the gym, fine arts and media center extend like spokes from the central area.