Here is a great site if you don't want to carry a thumb drive between your home and school computer (and mobile devices) AND have your files automatically sync. Get up to 3 gigs free, sync PCs, Macs, & Lynix computers, takes any file type. You can share files and it has an online backup.
Think of it as a virtual thumb drive, the free space is limited, but so isn't a thumb drive. You can even work offline and your changes sync once you back on the internet. Watch the quick video to get a better understanding. It's been great not having to use a thumb drive between my computers.
