Not Believable
I think it’s pretty safe to assume that this person may have some issues that they need help working through. Mental illness is no joking matter. But this exchange did give us a little giggle. There is nothing believable in the OP’s story. You were thrown out of class by the teacher for “proving her knowledge wrong”?
The rest of the students followed you out in protest? Did they ask you to hold the next class? The teacher is suspended and you received an automatic “A”? This story is a hard sell. One of his classmates came to the rescue to clear up this nonsense.