Yeah, high school was hellish for me as well, and possibly worsened by the fact I didn't have a single friend (aside from my brother) from my sophomore to my senior year, essentially a non-entity. Although, in retrospect I guess it wasn't such a bad thing as the friends I did make in my initial year of school were kind of the wrong crowd, and even they utterly rejected me, something to do with me being "immature" and "childish" because I wasn't up to speed with the latest social machinations and simply wanted everyone to get along and act like (in my mind) a proper group.
Oh, and the dating, that was interesting. Girls would flirt (I guess) and I would be completely oblivious to it at the time, as it would only make sense if someone pointed it out to me, and even then I didn't particularly care. I guess this offended some people though, because I gave their friend the "cold shoulder" or some nonsense. I would try and play the game, really, if only to keep the peace, but my actions usually ended up being terribly awkward and usually a bit on the childish side. This isn't counting instances when people were showing public displays of affection (which usually gives me intense anxiety for some reason) and I'd try and not look at it or leave momentarily or something, which drew the ire of some people. Very odd.
So yeah, to this day when I encounter a group of teenagers or individuals acting in a manner very much like that of high school, I sort of have a panic attack and feel restless, and a little bit sick.