Some of my assignments don't even require formatting, and while everyone in my class seems to have a Microsoft Word fetish, I always ask the teacher if it's okay to send them a plain text file. Problem with that is for a while I forgot about line terminations and was graded 0/100 for a few assignments I hadn't unix2dos'd.

Other than that, my teachers just don't want to comply with any requests. If we're using some tool of their choosing and the .exe files are provided through the local network, I ask them "is it available outside Windows?" and they ask me "why would you not use Windows?". When all their documents are .docx and .ppt files and I ask if I can maybe have a PDF, they tell me "use Microsoft Office or ask a classmate for pictures, I'm not converting anything".

That about sums it up for my experience of not using Windows in uni. I keep trying, but always get this kind of "you must submit to my standards" response rather than decency.