First of all, wikipedia isn't retarded. Second, please don't PM me about threads. Third, we aren't gonna spoon feed you information. You're not a baby, don't act like one. We'll gladly point you in the right direction and help you if you prove you're actually doing some work yourself. Now since I'm in a good mood this morning, I'll take you by the hand and and help you with little baby steps towards your goal:
If you can figure out how to run programs on your school computers get a program called TORpark and stick it on a CD / USB stick / whatever to get it to school. Otherwise, (at home so you're not blocked) google "CGI proxy" and click through every link in the first 10 listed (I just clicked through the first 5, and 3 of them are proxies, so don't give me any BS about it, just go do it, mkay?)
If after you've found a CGI proxy you can't figure out how to use it, post back the URL for the one you want to use and someone (if nobody else then I will) will post step by step how to use it. Don't post back asking for proxies because you'll likely get Goatse (or worse.)
P.S. Since you don't know what google is (if you did you wouldn't be asking us for help) here's the link to it:
-----> CLICK HERE TO GO TO GOOGLE! <-----
You enter what you're looking for in the only text box on the page (in this case "CGI proxy" without the quotes) and click the button marked "Google Search." In this case the first link won't get you what you want, so don't click "I'm Feeling Lucky."