While there are obviously curriculum differences in different places, my favourite is when folks in my very small town try to pull this. Like, Karen, I was in the same classes as you every year in high school. They did teach us xyz, you just didn’t pay attention.

This was in Canada in the 90s though, so we definitely had a whitewashed version of history taught. Though they usually do it less about history and more about math or science. “They never taught how to balance a chequebook”, “they never taught about viruses”. Yes, they DID. I was there with you.