would be rewarding the lazies over hardworkers who aren't great test-takers.
well, to be fair, those 2 groups may be considered equal. High school is one big test, and not a perfect one. The SATs and high school both represent big, nerve-wracking tests.
And some people whose GPA are unimpressive may have had bad teachers who did not inspire, and some people whose GPA are very impressive may have had bad teachers who did not provide much of a challenge.
But anyway, I am just being philosophical and playing the devil's advocate; I know what you mean!