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by gnicholas 854 days ago
Actually, a number of states require students to the SAT. [1] This has an interesting effect on the average SAT scores, since the pool of students who choose to take the SAT tend to have somewhat higher testing ability than the students who would not have chosen to take it (but end up taking it due to state mandates).

1: https://blog.prepscholar.com/which-states-require-the-sat