What Does A Grade Mean? Informativeness and Strategic Manipulation of Grading Systems -- by Joshua S. Gans, Scott Duke Kominers
When do university grades permit informative comparisons across courses, and how does transcript adjustment affect student and instructor incentives? A raw grade mixes student performance with course-specific conditions, so grade-only comparisons fail whenever course effects are large enough to reverse ability rankings at grade cutoffs. We show that full transcripts can recover comparable student signals through what we call eigengrades: course-adjusted reports that use common or externally a...