Install the desktop version in a VM, lock the VM behind seven proxies and only write the bare minimum on it, use as plain and generic English as possible. Or alternatively complain to the factulty, citing the numerous privacy-invasive problems. Or pick another class. Or pick another school.
>so they can make announcements and distribute files and such
I really don't get it. Email has existed for decades now and it has been perfectly adequate. Yes, it is a minimally more inconvenient than typing "lol xD" and pressing a button, but that's a good thing for class.