As has been said before, you don't need to be anything to be an "all star team" for the purpose of registering at a random comp. So if you go to "George Washington High School" in SmallTown USA, after your high school season ends, you create an allstar team "SmallTown Allstars", rent gym time (even if it's only your own school's gym!), invite all your squadmates along (and/or pick up NearbyVille High kids) and register as lvl 5. You perform your same routine you did at school, just add in double downs/baskets. If there's more time, you can change more stuff. Ok, you're not GWHS anymore, but you're learning and competing towards your goal of having the skills you need for college cheer.