<p>Excellent SAT scores & SAT IIs, but see if you can take 1 or 2 SAT IIs in subjects other than Math & Science b/c colleges often look for well-rounded applicants. Tough course curriculum & good ECs, however in your app be more specific about the length of time or number of years you did each activity–long term dedication towards a few ECs is in one sense better than short term involvement in many ECs.</p>