[adminprof]

This doesn't work when I've tried it. How many students or times have you implemented this policy? First, it doesn't make sense when the regrade is most objective (like points were calculated wrong, or the grader didn't see something that the student wrote). And if you say that it doesn't apply for straightforward grading mistakes, then you get emails asking you whether something is a grading mistake or has the chance of lowering a grade.

And I've tried this policy before, and got students who wrote in my course evals something like "the professor intentionally tries to scare students from asking for regrades by threatening to lower their grade even more." And then what about when you are still asked for a regrade (which in my experience was not zero, but maybe about a third or half as much as without this policy). In those cases, you end up doing way way more, so the level of effort actually increases.