From what I have been told, you must go with the school group. You cannot purchase tickets on your own. Also, there are no AP discounts. When my son's graduating class went in 2004 he had to pay the full $75 per ticket to the school. That included the school's bus, admission to IOA & a "party" at CityWalk. They were going up & back together on the bus, the students were not allowed to drive their cars, or go with anyone but the school. They must dress proper (not as proper as Disney..they do not allow jeans!). I can't see how the kids can be locked in to the park though? Maybe they are only allowed out with the school they came with. There are several different high schools that go at the same time. The good majority of them are from FL. I know my daughter's graduating class is going this year, but I am not sure if she wants to go.