Is this a legitimate writing rule for my english teacher to impose on his students?

My English 2010 teacher has a lot of rules for us when it comes to writing. He will only give out good grades to a paper if it's done in a style that holds his attention. He has this arrogance that whatever writing style pleases him personally is the only correct way to write. This is fine for me since I don't care about becoming a great writer and I just want to know how to get a good grade. The other day though, he assigned us the task of writing a profile on someone. We're supposed to use anecdotes but we're not allowed to have an even number of anecdotes. To back up the legitimacy of this rule he told us that questionnaires always have an odd number of questions and this is just the way it's supposed to be done. I think he's a nut, is he?