Ага

[birdwatcher]

Табаррок -- The real problem is not [grade] inflation per se. It’s that students are penalized for taking harder courses with stronger peers. The underlying issue is informational. A grade tries to capture two things—student ability and course difficulty—with a single number. Gans and Kominers show that in general this is impossible: if some students take math and earn B’s while others take political science and earn A’s, there is no way, from grades alone, to tell whether the difference reflects ability or course difficulty.
Академия - это такое место, где сказанное очевидно не всем и заслуживает исследований.