I had a physics teacher that corrected the exams horribly, and complained a lot that we were making her work too much. I remember an exercise on the exam that was worth like 3/10 points on the grade, where there was a river, and you had to figure out a certain position. Because I put the river vertically (the exercise didnt mention whether to put it vertically or horizontally) the axis were swapped, and that was enough for her to just grade the exercise with 0 points. And then when i complained about it to the teacher and she looked at it again she didnt change it because aparently it wouldn't "change anything about the result".
Like in general I got really bad grades with her, and like, both me and my parents started to think i was bad at physics or something.
Fast forward to this year, and I get like one of the best grades on the physics class in my uni (for some reason the teacher makes the grades of everyone public to everyone else).
So yeah fuck her for making me think i was bad at physics.