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 you can access Hotmail in school - Week 43, October 2009

We post some unblocking sites roughly every week, so sign up for our feed to stay updated!

The best way of unblocking Hotmail at school is to use an unblocking website. You can access any site that is blocked with an unblocker.

How does it work?

An unblocker is like a gateway that pass information between the computer you're on and the site you want to go to. The unblocker accesses the site in your place, loads the page, and sends it on to you. So the site you're trying to visit only sees the unblocker's IP. So in effect you are browsing sites in an indirect way. Internet filters think you are just accessing the unblocker, not the destination site.

Here are some unblockers you can use to unblock Hotmail:
invisinet.co.cc
unblock-safe-eyes.info
avenue3.info
ctunnel.co.cc
surfingmotion.co.cc