From my experience the bigger the school the more competitions and more is put into it. When I was in it we traveled to DSM, DVN, and LaCross. It looks like now they also go to Omaha. There were usually two costume changes per show as well. Practice was usually 9-10 hours a week from September through March. Slightly implicating myself here but here are a couple of my favorites...
https://www.youtube.com/watch?v=jp18K--oszs
https://www.youtube.com/watch?v=P_VOFpM0wwo
heh...spent most of my time trying to spot young WXman...