Hmm, I can't recall many of my grades, though one does stick out:

I received a -10 on a Math test in 7th grade for first not taking the test and then walking out in protest because the test was entirely on material we hadn't yet covered and I felt it was not fair to the class to be tested on something that we wouldn't know how to do.

Turns out that teacher was promptly fired a week or so later.

Take care all.