That doesn’t seem right to me. A lot goes on in AP classes that isn’t directly tested on the exams. That’s why colleges say they are more interested in the course grades than the exam scores. And there is a huge range of scores that result in a 5. Maybe a borderline 5 and a so so performance in the course “deserves” an A, but I am not convinced that a teacher who’s had a year to evaluate the kid knows less than the college board.