When I was in 7th grade I had the same teacher in Latin that my dad had.

That teacher was really old. It was hard to cheat in a test, as he had extremely crossed eyes and I never was sure where he looked.

Weird memories.

There are entire memes, like chants/tapped rhythms/dirty jokes, which pass from generation to generation entirely in a school, passed down from year to year until eventually a child learns some singsong or piece of scatological nonsense their dad or mum knew but never mentioned outside of school.

In my world, this is impossible but in another, similar world it would be surprisingly plausible.