I'd recommend just getting a cheap dual core laptop with good battery life for school.
You'll notice with laptops that are designed for the gamer that they are bulky, have HORRIBLE battery life and are hot and loud. I speak from experience I've got an Asus gaming laptop that I bought for "school" like two years ago.
It was just waaaay too inconvenient to carry around and the battery could only last about one class.
Thats why now I've got one of those netbooks for school $400, lightweight and 10 hours of battery life.
Just safe until you can get a gaming desktop.