<p>I can only speak for my own experience. I just got accepted into Williams yesterday with SAT score 2040- 690/670/680 and 630 World History SAT II and 720 Maths SAT II. Im an international student from Norway and I take IB, predicted 44/45. Based on pure academics your son should have a great chance. I am relatively well rounded and I play sports and I have been part of the Drama production at my school for five years running. Your son demonstrates that he is interested and consistent in his ECs as well. Obviously you cannot be certain, but your son should have a good chance at getting admitted although at times the process could be random</p>