Hello Tannerfrankuml, this is my answer to your current question:
You are not able to unblock the "blocking settings" on school computers. But, there are website unblocking software you can get on your computer. Just buy a transferring device (USB Flash Drive) and use it on a computer at school. Type in the website address and it will automatically unblock it. Software like this use scripts.
-NOTE-
This is for educational purposes. If you're caught doing this strategy, you will either be fined, suspended, expelled, or even arrested. I know this because the Main part of a city you live in handles all the computer settings, and if the workers notice an error, they will find your IP Address, track you down and get you arrested.