@ElderWendigo@MiraLazine agree to disagree, a lot of those things I was definitely taught - if not in school then at least by adults who thought it common knowledge. Especially the nosebleeds (I had them all the time as a kid, and the amount of blood I ended up swallowing is..... A lot.) and knuckle cracking (my guess - started by teachers annoyed by kids making knuckle-noises during class)
Christopher columbus was definitely taught as an "American hero" up until he wasn't.
@MiraLazine love this!! any chance you can add a submission box? (With a section for source cited ofc :p). I'm sure there's a bunch out there that people might think of and want to add.
I made a website that tells you, based on the year you graduated high school, what your school (probably) got wrong! (yourschoolgotwrong.com)
My grandfather was an aircraft inspector for De Havilland in WWII. This is one of the notebooks he used to study for the job. He drew all the pictures. (ibb.co)