I heard some stuff that was worse happened after I left (girl brought a knife in her bra, someone turned on the gas in the chem lab) but during my time was the Ketchup Incident.
I guess the lunch monitors felt that students were taking too much Ketchup at lunch and “wasting” it, so they started monitoring it - two pumps, no more. Well, the guy I had a crush on (funny cool rebel type, in a band, all that) decided to bring Ketchup to school to share. He got in school suspension for some amount of time, and there were kids caring signs, and I remember a few times chanting, “Free (guy’s name)”. He became a folk hero of the oppressed student. They eventually reinstated full Ketchup privileges, and it was all because of him. At least, that’s how I remember it.
A few years later, dumb ass senior boys glued the sports trophies to the floor of the gym and got in huge trouble.