The other disadvantage with many standardized tests is that they appear less biased while not being very unbiased at all. Anyone who's taught test prep knows t

The other disadvantage with many standardized tests is that they appear less biased while not being very unbiased at all. Anyone who's taught test prep knows that "modest"/lazy students can achieve huge returns from being coached to exploit patterns in test structure and test content without actually becoming any more qualified as a student and without developing any kind of transferable knowledge. But it requires investing money in private test prep tutors, many of whom are themselves capable of good-paying opportunities elsewhere, so it's largely not available to earnest and hopeful students of lesser means. This impacts SAT, ACT, GMAT, LSAT, and plenty of other common tests.