Is there proxy site that allows facebook chat to work?

My computer teacher blocked facebook and any proxy site i try wont let facebook chat work. Any ideas?

go onto the “notepad” type in “command.com” save it as a “.bat” file under “all files” anywhere you want, then close notepad and open the thing you just saved command prompt will come up and all you have to do is type in “ping www.facebook.com” or any website you want. it will work. it will give you an ip address (ex: 13.85.284.) type that into the address bar on the internet. also download firefox and you’ll be able to delete your history

Unblock blocked websites. Huge list of school proxy sites.