Students can no longer game the system by picking easy courses for better grades

University grades usually mix student skill with how hard a course is. A new method can separate these, making grades truly comparable across different courses.

For years, students have picked easier courses to boost their grade point average, and this pressure has contributed to grade inflation. This paper shows a way to adjust grades so that course difficulty no longer offers an advantage. It means universities could finally compare student performance fairly, regardless of what courses they took.