Continuity mistake: In "Gym," when Moze is talking to Ned and Cookie arrives, we see her close her locker. In the next shot, it's open again. And in the next one, it's once again closed.
Continuity mistake: When Loomer and Cookie are sliding in the hallway, Cookie crashes into the first locker. But in the next shot, he is in the last one.
Continuity mistake: Mr. Monroe (Jim J. Bullock) is explaining infant care to his class using a rubber doll when a paper airplane with a sense of direction starts buzzing his head. He swings the baby, hitting the skeleton next to his desk, shattering its head and sending it to the floor. In the next cut, the skeleton is standing up again, and Mr. Monroe whacks it down again.