I liked lies my teacher told me a lot. I always thought it’d be fun to generate a “get up to speed” pamphlet for every year in every school district depending on who was supplying the text books to the zip code + year you went to school, so you could find out what misinformation you carry with you (since so few people are in the business of retroactively fact checking what they were taught as kids)
I'm sure a lot of parents would support you on that. A lot of PTAs have been struggling with curriculum mandates passed down from the state. there's little control over the content in schools at the School Board / School District level.