Continuity mistake: Doyle and Robo are in a locker while they are waiting for Miss Mather to leave the art room. After she has gone they go into the art room to steal the pistols, leaving the locker door open. After Doyle has stolen the pistols, he and Robo run past Tucker in the corridor and the locker door is shut.
Continuity mistake: At the start Benny chases Tucker out of the basement. When they reach the top of the stairs look at the four extras that walk past them: a blonde girl with a red duffel bag, a brown haired girl with a basket, a boy with a black sports bag and a boy with a black Adidas bag. When Benny and Tucker's chase reaches the corridor, the same four extras come out of the classroom on the left.