<p>I agree with with xaniamom. While not exactly your situation, my daughter got into Harvard for physics without ever doing a single math or science EC. Her EC focus was ballet which she continues to do at Harvard along with her physics research and classes. If I recall correctly, one of her essays spoke about how understanding physics (mechanics) is advantageous to her dance. Just make the best case for yourself that you can and remember that few if any are a sure shot for schools like MIT and Caltech, so make sure that you apply to enough other schools that are safer bets.</p>