Only strange thing I remember is that my 8th grade math teacher (probably around 1980) had a ruler with tape on the end that he would hit kids on the head with if they were misbehaving. Broke it once or twice on a kids head.

I remember one teacher throwing heavy key rings at misbeheaving kids. Also we had at least two or three cases of a teacher hitting a kid. It wasn't a big deal at the time (late 90s), probably because the "victim" usually was well deserving. Still hard for me to understand are the teachers who mocked and ridiculed students for being heavy or underachieving. That was really pathetic and I hope todays kids don't accept that kind of behaviour anymore.

I don't remember anything remotely like that.

#15 - still done today, albeit not raw ore but fuel pellet encased in epoxy as a "keychain" accessory.

In 6th-grade science class the teacher passed around an open beaker of mercury. Heavy as hell. Everyone dipped their fingers in it. Lunch time!

Jr high in the 70's, during PE you'd have to break a major bone before they'd call an ambulance. I broke my ankle, it wasn't until I passed out from the pain that they called the ambulance. Broken nose, broken fingers, coach would tape it up and you're good to go. Get knocked unconscious, as long as you could make a coherent sentence by the end of the period no problem, even then if you were loopy they'd just send you to the nurse who would 'watch' you until she decided you could go back to class. Then there was the tackle football on the blacktop which would have melted puddles from how hot it was.

#12 Sadly, this was EXTREMELY COMMON for every school, particularly religious ones, and is still practiced, although not legal name changes like hisotrically (some foreign schools will give nicknames or use the name in their language, like Mary, Maria, and Marie, which are English, Spanish, and French).

#8 I'm pretty sure the swim-teacher was a pedophile

#6. True. I was a crossing guard in sixth grade.

got taped to my chair when I was 6 because I did not stop moving (80's)

teachers let students go to the shop to buy him beer or cigarettes.
That same teacher allowed students (13-16 years old) smoke in class when they pay him some money. This in a school that did not allow smoking outside on school property. (early 90's)