Continuity mistake: When the lead terrorist wakes up the morning after his father is murdered in prison, he discovers that the power has been cut to the school. Shortly after that, when the boys enter the restroom, you can see that the lights above the mirror and on the ceiling are lit. It may be possible for SOME lights to be working on battery power (like the ones above the mirror), but it's not likely that all of them would be battery backed up.BGraz
Revealing mistake: At the beginning of the film when a Judge is thrown out of the airplane, you can see a parachute is attached to him.
William "Billy" Tepper: All right, what now?
Derek 'Yogurt': All right, all right. Very, very carefully take the red chip out of the receiver.
William "Billy" Tepper: There is no red chip.
Derek 'Yogurt': There must be.
William "Billy" Tepper: Well I'm sorry, there isn't. There's a blue chip the same size as the red chip, but there's no red chip.
Derek 'Yogurt': That must be it then.
William "Billy" Tepper: Well is it, or isn't it?
Derek 'Yogurt': I don't know.
Dean Parker: I'm not going to expel you. Three schools have done that and it's obviously done nothing for your character... I'm going to do much worse. I am going to keep you here until you graduate. It'll probably take years at this rate.
William "Billy" Tepper: I might wear you out before then.
Dean Parker: Oh don't you worry about wearing me out. I'm going to wear you out.