if your school has it blocked then you can do one of two things either one jst look up a proxy site (a proxy is something that goes around firewalls that block things) such as
http://www.rtunnel.com or something like that
or you could use another internet port to go to gaia at school...not going into what ports are but basically where it says http:// at the beginning of a site address if you change it to https:// that changes ports to a secure network which most schools don't take into account so its unblocked the only thing is then you'll have to keep changing http:// to https:// everytime you change a page or at least thts what i've had to do