Homecoming: During homecoming week, the senior class ALWAYS "trashes" the campus....stacking picnic tables/trash cans, toilet papering, shaving cream on doors and windows, everything. The years before my senior year, seniors got really nasty and were putting feminine napkins and other things around the campus, even dead animal carcasses. We were warned before Homecoming week, but because of a Jewish holiday earlier in the season, our homecoming wasn't until the middle of November (basically the last home game of the year). Luckily for us, we had the Tuesday off (due to Veteran's Day), so the senior class schemed to decorate the campus early Wednesday morning....the administration had camped out to try and catch us, but we were able to get around them and run the "campus supervisor" around trying to catch everyone at about 4 in the morning. Of course I didn't participate, but I knew everything about it and since my mom was friends with the principal's secretary, we couldn't say anything to her so that anything was leaked....
The Pit: large open area on campus that we sat in for lunches, but was torn down for a expansion on our previous gym
Senior spaces: Seniors were allowed to "bid" on a particular space in the parking lot. I think I got mine for $50, but some went all the way up to $200! In the years previous, seniors were allowed to paint their spaces, but the administration discontinued that with our class.
Senior ditch day: Ours was an official ditch day (how wrong is that???) where we got permission slips to sign out of classes. I had an AP exam coming up, so I didn't go.
Senior breakfast: Week before we got out, we met in the middle school's all-purpose room and ate breakfast together. My senior year, our class officers handed out unofficial awards (like the yearbook ones)...I got Sweetest girl in my class!
Powder Puff between the juniors and the seniors (no hazing like the incident in Illinois) where football players coached their year's team, and I think we had male cheerleaders for one year, that's it
All athletics: On the way home from an away game, as soon as we were getting close to school, we would begin to sing the alma mater on the bus....great way to end a (usually) successful night!