I know how you feel. I get so anxious on the first day when teachers ask you to introduce yourself! It's like, hey, I'm in your class, you know my name, why not just stick to, you know, teaching until I'm not terified of everyone in the room?
I'm in this math class right now, and I just wish I could hide every time I go in that room because everyone else in there seems to know exactly what the instructor is talking about without any trouble. She also makes us do problems on the board in groups, which is nerve-racking because I don't want to mooch off of anyone, but I just need a little extra time to understand stuff before I'm on the spot. Can't drop the class, though, lol.