I’m super confused how grades are calculated in University. I have a sim who did all of his homework, turned in outstanding term papers, always attended class, and studied and yet he got an F and a C+...
Make sure your sims have a decent level skill for the course they are taking. When doing my biology degree he had a course which focused on gardening, ended up getting an F because his gardening skill was quite low, I think maybe 1 or 2.