Dear college student who's not happy with your grade in my class:

[struggle4progress]

60. The best scheme I ever saw for cut-offs, in large multisection

courses with a consistently graded final, was simply to list ALL the grades low to high and look for the gaps. They were always there and close to where you'd expect them to be

I know the cut-offs in advance, and put them in my syllabus, but I still look for gaps and sometimes adjust downwards without saying so, if justified by the gaps: this may mean 79 is a B, 68 is a C, and 58 is a D. Administration has never complained, and if a student complains about the grade, I merely point to the syllabus and ask them for their calculation