Most Helpful Girl
None of them. Films always portray high school as a hell on earth were talking to someone who was not in your clique was frowned upon, when in reality, high school isn't that bad and definitely not as segregated.1
Most Helpful Guy
Oh God... well, sometimes I think certain 70/s80s movies might've been realistic but I can't be sure because I wasn't alive in the 80s.
So, I assume Dazed and Confused was probably pretty realistic.
For the 21st century, Superbad was pretty accurate, at least character-wise. Plot-wise and McLovin-wise, not so much.
I would say Napoleon Dynamite could be pretty accurate too, at least for those small town type of schools (which I've never attended).2