To start out, you're going to need probably one thing
!A flash drive!
A substitute that you can use, could be a CD-R or DVD-R.
What you're going to need to do is, when you're at home download google chrome, which can be found at this link: http://www.google.com/chrome
Then you're going to need to download a program called UltraSurf Which can be found here: http://ultrasurf.en.softonic.com
You will have to put the files onto your FlashDrive, then anticipate your next day of school! [Lol]
You could always try searching on google AT school, but I doubt you'll have much luck..