How is it decided which division(what level) teams play in? Is it possible to move up or down based on performances?
Depends on the sport: Football (American) is Based on enrollment, Stadium Size, attendance and preformance. Moving up to Div IA from IAA is hard but I think South Florida did it a coupled of years ago. but it is rare. and I think temple is leaving The Big East (Div IA) and Moving Down to A-10 (Div IAA for Football) so it can compete.