QuoteI guess I figured I would just show up as myself, open to my classmates. Now I'm having second thoughts...
Informing professors is something I just can't do face-to-face, really. I'm too nervous. That being said, most professors won't have an issue. I'm not a grad student, but I do have 2 very small (20 students in one, 24 in another) classes, both of which require we speak, get to know each other and so on and so on, since one is a language and one is a writing course, but you should have no problem.
For example, I had a near-horror story in my Polish class. I forgot to email the prof before class, so it IS my fault, but it does show how simple it can be. She did roll call, and I had to respond given the size of the class and whatnot. So I responded to my female name and flat-out told the class "I'm not a girl. It's a long story why I have a girls name. Call me Chris." Then I emailed explaining myself and there's been no problems from anyone since! =D Not even when a new guy switched in and kept calling me "she" in Polish. My prof corrected him before I even could, and no one seems to think me any the odder for the name situation.
In the other class, however, I did email the prof ahead of time, and he's been great about it. Unfortunately, I'll probably have to come out to some extent in that one, since names on the course website can't be changed and we'll need to submit online things for our peers to read -they'll need to know who to look for/why I don't appear to be there. Ah well. I'm "established" male in that class, so we'll see what happens.
Moral of the story: Small class? Show up and be who you want to. It's scary but worth it, imo.