Eh, i had a teacher who.. back story: She originally taught us in Grade 2, and at that stage she picked out this student who she babied from there on out who she labelled as a math genius, and she actually boosted him ahead a grade in math.. So when we were in grade 2, he was learning grade 3 math.
I was better then him in math, but for some reason she chose this guy as her prodigy.
Every year, i would wind up with better grades in math then this kid had had when he did the same stuff the previous year.
This teacher came back around to us in Grade 8. By this time i was a mathematical force of nature, and she hated that i was proving her wrong in which student she chose to be her prodigy, so she started deducting marks for ridiculous reasons. I had 100% on a test, but she docked me 25% because i had written more then 1 question/answer on a line.
She'd dock a grade because i had "written the date on the wrong line".
She kept upping how strictly she graded my stuff, and i kept stepping up my game to beat her.
In high school, we had a teacher who quite obviously hated men. If you were male, you automatically had to deduct 10% on anything that you submitted.
At the end of the year we had to do a group presentation. We were a group of 4 guys and 1 girl, and we knew we were sunk. As a joke, my one buddy said "We should all dress up as women"....I remember staring at him and saying "Blake, you're a genius".. Of course he went off on "i was only kidding!" but it was too late, and sure enough in that final presentation we dressed as women and got 100%.