MoN has a perspective similar to ours-- with some people, they WON'T hear it, and you can't make them. Nyeh-nyeh-nyeh.
(I know, childish, isn't it? But that is almost the level at which it can devolve to if you press onward in spite of the warning signs you're seeing.)
We dealt with a biology teacher like this my DD's freshman year in high school. Oooooooooo, was she ever bad news for HG+ DD and her GT classmates-- pedantic and rigid doesn't begin to get started in describing her classroom philosophy. She just wanted them to shut up and quit asking questions and talking to one another. There's no FUN in learning-- some nerve, those kids had...
She actually told a classmate of my DD's to "figure it out-- you're an honors student" re: an assignment that had no real guidelines and was an independent project worth 20% of their course grade.
As long as the hostility is directed toward parents, that's one thing-- I get my kid out-out-out of a situation where it becomes directed at her, though (which is what we did).