I know, because of my family, a lot about the Hollywood (so called) film industry. I know, by seeing movies from elsewhere in the world, more. Views vary, and that is probably universal.
My father was an early film editor, late twenties, into the thirties, and more. I considered going into that myself.
I think I'd be right that the do-ers would be appalled by your teacher's questions.
I will add, check out UCLA film department; they may be able to help you.