Hey, look on the bright side: Every other student in your class will be in the same boat as you are. I was worried about my classes until I got into them and realized that the "kids" in class really didn't care and most didn't do their work. As an adult I am in school because I want to learn, and because I want to learn, I do my work and study. It's amazing how well you do when you pay attention and do the work. You'll be fine!