I had so many experiences like that. I was a voracious reader as a kid. I was reading books in English (my second language) about topics such as aeronautics and space exploration. I was reading far, far above the level of any classmates. And that lead persisted all through college.

Every time a new teacher would give us an essay assignment, I’d get called out to stay after class once they graded it. And they’d casually accuse me of plagiarism.

My usual response? Quiz me, right the fuck now, on any paragraph you want from that 20 page paper. And ask me the definition of any word you’re unfamiliar with. That shut them up right quick.

A large vocabulary is its own reward, but not so much when those who’re supposed to teach you are lacking in that department.