IMHO the SAT is no more objective than an essay, grades in school, or any of the other things you listed. What is the SAT objectively measuring? Not math. Not

IMHO the SAT is no more objective than an essay, grades in school, or any of the other things you listed. What is the SAT objectively measuring? Not math. Not logic. Not writing ability. It's objectively measuring the ability to succeed at a timed test which involves some math, some logic, some verbal ability, and knowing how to "test well". I taught GRE test prep classes for Kaplan for a year or two. What I observed was: - To do well even the bright folks had to block out time and apply study skills, be organized, and "learn the test." - This means having the time to do those things. - Time allocated for test prep and study was a better predictor of success than almost anything else. - Yes, some people who were naturally better at certain things had it easier, but that did not obviate the above. My conclusion for the GRE at least was that it primarily measured the time available to prepare, the study skills of the student, and the test prep resources the student had access to.