You have to be careful about comparing SAT and ACT scores for test-optional or test-flexible schools. For example, Middlebury reports SAT I scores for a greater percentage of entering students than does Hamilton.
Hamilton: SAT I scores reported for 56% of enrolled students, ACT 27%
Middlebury: SAT I scores reported for 68% of enrolled students, ACT 44%
Vassar’s numbers are closer to Middlebury’s, so comparisons are more appropriate.