A related observation: what is the point of a “B” grade? It means “this person didn’t learn everything.” If you’re going to say “oh ok they got a B so we need t

A related observation: what is the point of a “B” grade? It means “this person didn’t learn everything.” If you’re going to say “oh ok they got a B so we need to teach them some more”, that’s really useful. But if you just given someone a “B” and send them up a year at school/university, then presumably they find it harder and harder to do subsequent courses. And over time they learn they’re a B student. Which is demoralising, and possibly also insulting as it ascribes failure of the learning process to the student and not the teacher.