ACT and SAT each have their own parts of the country. The GRE has its lock on graduate admissions. And so one could blame the companies but really economically they have no incentive to change things very much because they're getting the business.

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I am free because I know that I alone am morally responsible for everything I do. I am free no matter what rules surround me. If I find them tolerable I tolerate them if I find them too obnoxious I break them. I am free because I know that I alone am morally responsible for everything I do.