@n16510b47597,
Well, he has a boss just as any other professor does, right? Talk to the Dean and explain your side. If you're very lucky, he was bluffing. If not, take it up with the Dean.
As for your keeping the exam:
Some professors might feel that students who keep exams (instead of handing them back) might sell or give exam answers to other less-than-honorable students - hence the instruction to return the exam. some professors have several classes and submit the exam with the same answer keys.
Frankly, you should have followed how you were instructed. No one else kept the exam, correct?
Quote:I will reveal the professor's name and the college if I really get an unfair grade in the end)
Highly inadvisable. You could get yourself into a lawsuit by doing that.
Deal with Dean. And don't publish this professor's name.