Sorry if this is off topic, but Brad Pitt had one of his early roles in a pretty good teen slasher movie called Cutting Class. Then there's this really demented teen slasher movie about a transsexual killer called Fatal Games which I still like to this day. Creepy, suspenseful, well-made in my opinion, even if everybody else says it's low-budget garbage.

This is a screenshot from Cutting Class (I love the 80s feel):