back + up = BACKUP
In an age of advanced technologies and micro-sized portables and mass-storage drives, why would you not backup the data if your entire 3-yr scholastic career depended on it? iPod in data mode? Pocket FW/USB2 drive (40Gb ones are pretty cheap now), etc etc.
You said before you had roughly 1Gb of documents pertaining to school, burn a dvd for Pete's sake (the real Pete, not the expression Pete). (and don't bother saying you don't have a dvd-r drive, find someone at school, I know it exists somewhere nearby, its all the fad these days).
One the second portion, I completely agree that after a while of studying, browsing/posting MR is a great break, actually better for me than TV or a video game because its less distracting mentally and there is not a time limit (start a show, and inevitably I will finish it, and video games just suck you in). Best of luck studying for your tests, backup your stuff to be safe!