Try this unblocker!

It's new and nobody knows about it yet:
http://tiredstudents.com/

It looks like a lot of school administrator type people have been watching our sources, and are blocking new unblockers pretty much as soon as they're released. So all the unblockers we've posted on this site are probably blocked and any new ones we post from that same source will be blocked very quickly as well. For this reason it'd be best if you try to make your own unblocker instead - you can find instructions on how to do this here: How To Make A Proxy

How to access sites while at school - Week 08, February 2010

We post a few unblocker sites roughly every week, so subscribe to our RSS feed to stay updated!

The easiest way of getting on sites at school is to use an unblocker. You can get on all blocked sites with an unblocker.

Here are some unblockers you can use to unblock sites:
hogproxy.info
www.lotsfree.info
zooop.co.cc
pumpkinproxy.info
www.flyall.info