Saying that at college what I do is Remote Desktop back to home, no need to proxy avoid as technically i was using my own ISP.

If you havn't got an icon for Remote Desktop on a restricted machine, create a new text file but with the file extension .RDP, open this and it will open the Remote Desktop application.

just type in your IP address for home and viola.

You will need to have your router set up with port forwarding, but if you can achieve it it fooking rules.