Steve's article is a great place to start:
How to Become an Early Riser
I'm also going to suggest that it might be difficult to get up for reasons, other than the amount of sleep you need. Number one is that you are not used to the routine. You get used to it by getting up daily at the same time. Second reason is if you are missing a motivation. For example, if you don't like your classes, it'd be a lot more difficult to get yourself going.
Some diet adjustments and some activities also have an influence on how much sleep you require. For me, I find that meditating lowers the need for sleep. I think Steve wrote in some article that he correlates aerobic exercise with decreased need for sleep. It's fun to experiment and find what works for you!