Had a "european history" class in which the teacher lectured on European art, not actual history. Dates, eras, styles- stuff that had little to do with actual history.
Anyway, we had a test. Out of 100, I got eleven right and got the only "A" in the class.
Did the teacher go ape shit? Ours did and it was unexpected. It wasn't the "you're all failures in life" but more of "don't you people pay attention".
Also had teachers in High School do the same thing. "Bitch outs" from teachers against the entire class was common.