It's kind of a fun idea, but as everyone has pointed out: every school is different, even of there is some centralized board of education, some times teachers just say dumb shit.
Also, when does a fact become a fact? Like, dinosaurs had feathers. It was theorized, then debated, then clarified, and now there are some reasonable consensus about it, but theropauds probably still aren't presented as having feathers in some books. And what teachers know this?