This is an obvious one which I could have easily started the entire site with, but my memory is like pond. I've got to drag the depths of it every once in a while to find my keys or a decent movie I haven't seen in some time.
marijuana legalization, prescription pills, and improved forms of contraception have changed the terrain of high schools (a little), but most of the achetypes in this film still work perfectly. Oh no! I've said too much. Please don't remake this film!