Slaughter High (1986)

If you're a heterosexual male in high school and Caroline Munro invites you to the girls locker room for sex, well, you're going to go. Science nerd Marty does just that, but things don't go down like he wants (i.e. him down on her).
Jump to years later, back to the same school for a reunion of assholes who subsequently get knocked-off one by one. The comedic tinge that helped the earlier years seem less stupid is gone, leaving a slasher B-Movie that's very B.
It's absolute garbage, but some of the kills are superb. Therefore, if what amounts to about ten minutes of gruesome deaths in a ninety minute film is your sole criteria for enjoyment of something like this then you'll be sated.

1½ warning bells out of 5