Great thread, Sarah--although I am sorry for everyone who had miserable junior/high school experiences.
High school for me was somewhat boring, but not terrible. I had lots of acquaintances in different cliques--I was on the honors track so was friendly with the nerdy Mathlete types, but also played a few varsity sports with the jocks and hung out with the litmag/art crowd--but I had only a few really close friends. Without exaggerating, I really credit my discovery of indie rock and WFMU in the 7th grade to shaping who I later became. I hung out in New York as much as possible and tried to go to as many shows as my parents would let me on weeknights.
My high school itself was a pretty unremarkable suburban institution: not as academically recognized as some in the area; not as rough as others. We had some great, dedicated teachers, and some who were obviously counting down the days until retirement. I regret not paying more attention in Calculus, being so bummed about breaking up with my 11th grade boyfriend, and not taking Latin.
It's funny to think back on those days now as a high school teacher. I'm only 6 years older than my seniors, but it definitely feels like a very long time ago. The school I work at is a decidedly touchy-feely, progressive school for girls. My students are sweet as pie to me, except when they complain about their grades or about their reading assignments. I have heard that the middle school girls (it's a 6-12 school) are much harder to rein in and are much more susceptible to "Mean Girls"-style behavior, but for the most part my students are too stressed about getting into elite colleges to be horrible to one another.
On that note, one more class to teach before the weekend...