Well, you could start by looking for one that challenges and tests you; one that stretches your mind to the limits; one that surrounds you with like-minded people; or one that gives you the space to study and the space to have a good time.
Whatever you’re looking for, you should seek out a college that does all these things and more: one that thinks differently from the rest and one that helps to get the grades that match your true potential as well as giving you the freedom to be you.