How to override a school’s website system?

How can get go to sites that my school’s internet blocks without having to use a proxy. I want to be able to check my facebook without going through a proxy. Is there a way i can override their settings?
i have a flash drive and i can install firefox on there if needed.

There is 1 elegant solution that is mostly unknown to many people and network administrators are fine with: Remote Desktop. Log into your home machine and browse from there. If the shortcut isn’t listed at your school, it’s start -> run -> type “mstsc” and hit enter.

How to bypass any security/parental control