Before i start this is just an ADDED SUGGESTION to Liana's post (not copying what she said)
Ok here is a way 2 get past the blockers at school, some guy who makes viruses told every1 at skll how 2 do it LOL, pretty useful for gettin 2 wow.com and stuff :
go 2 start > run then type 'cmd'
next you have to type this:
ping www.<insert website here>.com
eg. ping www.mmowned.com
push enter and then a website will come up with some numbers eg
www.191.88.6766.com
just type whatever comes up (the website) into your browser and it should work :P u can get to anything, also previously posted are some websites u can use to get past the blockers :P so here they are (Credit to Scarmaker & Liana for these websites)
Scarmakers:
fishswimfast.com
acidmountain.com
haroldsgym.com
organicchewinggum.com
seahorseolympics.com
Liana's:
www.atunnel.com
www.btunnel.com
www.ctunnel.com
www.ftunnel.com
www.polysolve.com
Enjoy!