I was taught that serious academics favored Support Vector Machines over Neural Networks, which industry only loved because they didn't have proper education. oops...

also, Computer Vision was considered "AI-complete" and likely decades away. ImageNet dropped a couple years I graduated. though I guess it ended up being "AI-complete" in a way...

Or history that was not covered...

I did too many drugs in high school. I don't remember a lot.

In an atom, the electrons orbit around the nucleus in the same manner as the planets orbit around the sun.

That's been debunked for many many decades but middle scool still teaches this model. At least I wasn't told back then how misleading and wrong that is, only in high school right before graduating the physics teacher emphasized this misconception. I remember how mad she was about it lol. I have no clue how its taught elsewhere.