Continuity mistake: In the final basketball game #23's hair is wet from sweat and gets knocked to the ground by Mick. It cuts to the coach. #23 is standing next to him with dry hair, immediately followed by a shot of him being helped up by his teammates and carried over to the bench.
Continuity mistake: When Scott enters the dance as the Wolf, and he's walking through the crowd, you can see Chubs is right behind Mick and Pamela, and Stiles is next to Chubs. When the shot changes, Stiles is now behind Mick and Chubs isn't seen. Scott walks past Mick and Stiles and in the next shot, he hasn't passed them yet and Chubs is back behind Mick.
Revealing mistake: After the first game in the locker room, Scott notices a 6 inch long hair on his chest, the hair is visibly taped to his chest with scotch tape.
Revealing mistake: You see Scott walking towards the shower and he says hi to Chubby while passing him, but if you look closely after that you can tell Scott's only wearing a mask and his shoulder is bare skin. (01:00:15)