How do I get around a block at school?

You don't.

There are a few threads that discuss this. The bottomline is that a school or company has the right to control what their computers are used for. Students or employees do NOT have the right to try and get around that control. Attempts to do so can result in suspension or termination. Therefor, it would unethical for you to try and unethical for us to help you do so.

Question Closed !