Most online schools have all the information you need for classes posted on the websites (you have to log in to a 'student section' type thing to access it) and you can do your reading/studying/paper writing/assignments whenever you have time.
I'm studying with American Sentinel University right now (check them out:
American Sentinel Online University | Earn Your Online Degree With Us | Information Technology | IT Degrees Online | Game Programming Degree) and I wouldn't be able to go back to school if it weren't for the online option!
What degree are you trying to earn? There are a lot of colleges out there... just make sure that you choose one that is ACCREDITED, or you'll be wasting a lot of time and money!
-Tim