<p>It happens at D’s university but I don’t know that grading is separate. Specifically, stats for math majors is a 500 level class which is upper level/grad level. It’s because so many grad programs require it and it has to have at least a 500 number. D’s upper level math classes are all 500 level and there are some grad students in them - mostly math education masters students.</p>
<p>Only a guess, I know years ago in my grad program you couldn’t make more than one C. Undergrad programs will let you have more. Maybe that’s the difference.</p>