Simple, I use to always get around stuff. Download TorBrowser (which is easiest in my opinion), or use a proxy. Guessing some proxy sites may be blocked here are some good up and running ones. 114.141.180.76 Port:3128
I just downloaded the hotspot shield from a few posts above, it works far better and is easier than Tor or any proxy imo (i have used both, a lot). maybe im just a stupid high schooler, but i couldnt figure out how to install unity on there anyway.
I guess you could, but the administration probably wouldnt be chill with it. I downloaded it onto my laptop which i bring to school everyday (i take several classes online, and the rest at school).
They blocked shredsauce, but they didn't think to block the website that tells you how to unblock shredsauce (aka how to breach the security system like abortionater said).