Reply #153: Only once did I ever challenge a grade/test...

[InvisibleTouch]

...and that was in undergrad on a question that happened to be my own area of expertise and interest, and I <i>knew</i> I was right, and the test question had just been worded badly. The prof kinda-sorta admitted I was right but then blew me off, but did promise that if those two points made a difference for my grade in the end, we would re-discuss it at the time. You can bet I would have been back. As it turned out, I squeaked by with an A for the course by pulling 100% on the written final - an accomplishment I remember with pride to this day. It was a tough class, but it was also a subject I loved (vertebrate evolution), so overall it was a good experience.