Let's play this out further. How about high school, should there be grades there? Tests at all levels also typically involve a grade / metric -- are those included too?
At least where I live, universities used to run entrance exams. They didn't care about high school grades, or even if you'd ever been to high school: if you passed the entrance exam, you could enroll.
In class room stack ranking is just meaningless. Either student passes demonstrating various levels of knowledge or not.