Okay. That's nothing.

Thank God I never had this calculus professor at my school (though some of my friends have). On top of being clinically insane, he used to have "all or nothing" tests, where if you got one point off you got a zero. Some student reactions, straight from www.ratemyprofessors.com:
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"Tricky Lui" - Intentionally put an incorrect hint on the board for a test to trap the students. 80% of the class used it...thinking that the professor was trying to teach them. I guess he was. He laughed when he told the class that if you used the hint, you were wrong...because he is "Tricky Lui"



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Ridiculously difficult to understand and learn from. Anyone who gets that much pleasure from failing students should not be teaching, and you know something's wrong when 79% of a class fails and the administration has to "step in" and change grades.



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Evil teacher. Makes fun of questions. Recieves complaint emails and proudly forwards them to the class mailing list. Introduces new material for final during an "optional" review session the night before. Avoid at all costs!