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 get on Twitter in school - Week 42, October 2009

We post a new list of unblockers approximately every week, so subscribe to our feed to stay updated!

Twitter is blocked? As luck would have it, it is possible to work around the school filter and unblock Twitter regardless of that.

Some advice when using an unblocker for Twitter

It's best to use an unblocker that isn't well-known. Unblockers that get used a lot will be found and blocked by the school. Unblockers that you find by searching Google will be blocked quickly because they're so obvious. Even if you find a good one it would be smart to have a backup you can use if it gets blocked.

Here are some unblockers you can use to unblock Twitter:
thesurfcondom.info
realfast.info
www.unlockmenow.info
getbrowse.info
tuxunblock.info