Today's lesson plan: arithmetic, world history, penmanship. And then afterwards it's a freeplay choice between ritualistic humiliation, Russian roulette, or bodily possession by a parasitic alien.

Yep, school isn't always fun and games. And sometimes, it's the teachers who actively make it a living hell. Here then are the 15 worst teachers ever captured on film, the kind who won't be showing up on any superintendent's honor roll.