Can you say the same for SAT tests, where the score is best of N and N is however many the person can afford and varies between candidates?
Not only that, but the SAT is not an IQ test and you can definitely study for it. Students with wealthy or motivated parents can get study books or tutors which makes a huge difference in score.
The Princeton Review promises a 200 point score improvement with some of their packages. And they can fairly-reliably achieve it too.
Yes; though SAT is less prep-resistant and it'd be smart to apply a "+/- 100pts" fuzz to a score.
And the meaning of the score changes over the years based on the test itself changing. Same goes for the company's GPA requirements where there have clearly been shifts across schools on the amount of grade inflation allowed or even encouraged.
As an aside, I'm not sure if I or the College Board can prove my score at this point.