AP tests given one time during school year, at same time, regardless of school. Tests may be given later in the Summer, not sure, but why would you want to take it then? Why would a game preempt an AP test.
I agree with you on the 6-6:30 thing. I could see it to avoid a late night return during the week, but this was a Friday night game.
Really not a good thing to ride an hour and half in the car, arrive, and step on the field a few minutes later.