What do you mean by "fake account"? Would you not use your real name? I have my first and then middle name as my last name (so no last name). No pic of my face. Facebook is fine with it. I think they want as many users as possible. If you're not abusive I'm assuming you'd be ok.

You could use it just for the class. Though facebook is designed to be addictive. (Maybe it won't affect you tho. I just think its important for ppl to know). And its hard to leave now bc you have to deactivate your account first, then not log in for a month or two before they will delete it. Again, none of that may "affect" you.

Good luck