IM BAAAACKK!!! NEW PROXIESSSSSS
This exploit involves changing your DNS settings to bypass network-wide filters. If your school also uses (an) extension(s), you'll want to also use the Disable Extensions exploit. Also, you'll have to do this for every network you connect to.
Open your Wifi's DNS settings chromebook howto
Set your primary DNS to 72.5.33.65 and your secondary DNS to 1.1.1.1