just started using this today, worked well enough for web browsing.
1- Leave your computer on before you leave for school, make sure to change the power saving settings so that it won't power down due to inactivity.
2- Download
teamviewer (the full version, for windows if that is what you use at home).
3- set the password for your computer (click on the "Password" field and then on "Set user defined password".
4- write down the ID and the password you set
5- go to school
6- download the mac version of teamviewer and save the file to your personal workspace (DON'T RUN IT).
7- once it is saved to your personal workspace, run the application, there should be an option to run it without installation (haven't used the mac version, but I would assume that the windows and mac versions are essentially the same), run it.
8- once you get the main window, enter your home computer ID in the "Create Session" box, and select "remote assistance" (the default setting).
9- hit connect, and if the school hasn't blocked the ports teamviewer uses, and your computer at home is on and connected to the internet, you should be prompted for a password, enter the one you set at home.
10- enjoy browsing any sites you wish.
sorry for the wall of text, it doesn't really take very long IRL.