This is precisely why the left wants to control education. No one must slip through the uniform indoctrination.
They pretty much control everything now.
History has changed from when I was in school in the 50’s and 60’s. That is why I keep several old Encyclopedia Britannica’s around. They were not so PC and just tried to be accurate.
My wife made up her homeschool curriculum. She used a variety of sources including some college texts. My girls started junior college at 13 and 14. One is now working on a PhD in the medical field. All done without “help” from the government. Government schools make morons, we do not need that infection in homeschools