Really depends what they're being used to rate; I'm fine with scoring movies/books/music like this. But grades just make me angry because (at least in America) learning seems like it's more about getting that A+ than it is actually learning. They need to stop rating students and start actually helping kids learn (instead of memorizing things only to forget it later).

^^^ THAT.

School tests and grades don't measure intelligence, yet a lot of people/society seem(s) to think they do.