<p>You can take the test in October for Stanford’s SCEA. I don’t know if your scores will go up, but as they always say “The more, the better!” Remember though that a 2190 is in the middle 50% range of those accepted to all 3 schools, so your score isn’t weak. If you do want to retake it, you should have a plan on how you’re going to improve your scores though. Another aspect to consider about Stanford vs Columbia/UChi is that Columbia and University of Chicago are located in major US cities, Stanford is not. If you feel strongly (positive or negative) about city life, that may help you make a decision as to which school you like more. Personally I think for you Stanford would be more of an adventure, but that obviously the other schools are excellent as well.</p>