UltraSurf V18.01 Portable
Sites that block anonimizers (ultrasurf, hotspot shield, etc...) generally don't touch premium services (in my experience). If you use one a lot, you'll find it's a worthy investment, (so much faster and stable), and it doesn't cost that much.
UltraSurf v18.01 Portable
But let's say you can't install extensions on the web browser provided by your school. In this case, you'll have to use a portable browser that installs on a USB stick and runs without interference from the school computer, which will allow you to route all internet traffic through a proxy address.
Now that you have a good proxy address, you'll just need to install a portable browser and set it to route traffic through your proxy. Start by downloading Firefox Portable from this link. Next, insert a USB flash drive and run the installer file, then make sure to select your USB drive as the installation directory when prompted.
Ultrasurf is going to be the solution that works 99.99% of the time, but I am NOT referring to the chrome extension, but rather the portable executable (.exe) that can be downloaded from their official website. It's self contained so it does not need to be installed, simply run the .exe file and it will tunnel your web browsing through their anonymous proxy. 350c69d7ab