Continuity mistake: During the football game between Rocky Creek and Highland, when Rocky Creek hikes the ball and pinches it back, he is distracted and doesn't catch it. A player from Highland picks it up and runs for the touchdown. When one highland player is hitting a rocky creek player, in the bottom left corner of the screen, you see the ball mysteriously rolling on the ground. Then the next shot shows the same guy who picked up the ball making a touchdown. Two balls for one football game?
Continuity mistake: In the scene where Gil has knocked out Connor and is trying to get the whole school to see it, he lifts him up against the wall where Connor falls into the trophy case, breaking the glass. Later on in the scene, when the principal comes out, they show the trophy case, but no broken glass.
Continuity mistake: When Dizzy is at the mall (right before he goes to preach about sexual abstinence) he is talking through the fish tank. The UFO looking thing is going up and down in the water. If you pay attention to where it is in shot by shot you'll notice that sometimes it's going up and then when its to all the way to the top the next shot it's at the bottom going up again.
Visible crew/equipment: When the bully has cotton wool in his nose by the school bus and is asked how his nose is, you can see the reflection of the camera moving along in the bus windows. Towards the end of that scene, a crew member can be seen behind on the bottom of the hill through one of the bus windows.
Continuity mistake: In the scene where Dizzy is playing with his band after the first day at Highland, they get finished playing and they are talking about Dizzy's day. You can clearly see the guitar strap is still on Dizzy's shoulder when he is talking. The shot goes from Dizzy to that girl and back to Dizzy and the strap isn't there any more.
Plot hole: When Gil was riding on the bike as it was tied up to the car by rope, leaving the party, his friends slammed on brakes, causing Gil to fly forward over the car onto the windshield. After he said, "I almost got laid", music came on and it appeared through the window they started driving again. If they had driven away, the bike tied up would've been making noises. They showed no interest in the bike still dragging behind them.