Originally Posted by Bostonian
Originally Posted by Tallulah
When that B means their entire high school GPA is never going to be as high ever again? No. And when the only way to get an A us utter perfection, every time? No.
I don't understand. A student's grade over a marking period will depend on many quizzes and homework assignments and a few tests. It's not necessary to have a 90% on each quiz in order to get 90% of all points. My son has A's or A-'s in his classes, because he tends to very well on tests but often gets 4/5 or 8/10 on individual assignments.

How often to assess students and what fraction of grades appearing on report cards should be A's are separate questions.
90% is only an A-. If you have 20 tests, each out which is out of ten and you miss a question on each of them, then you get an A-, not an A. You need to get perfect marks close to half the time if you only miss one question on the other tests. And for every extra point missed on a test, that's another you need to get 100% for, to balance it out.