<p>Hello my S is a rising junior. We have schedule conflicts for the coming summer. He has already decided to join some summer enrichment programs which he is very interested in. However in this way, he cannot take pre-cal, then he cannot take Ap calculus in junior year. My question is, how important is Ap Cal in junior year for the most selective colleges? He will be majoring in social sciences like enonomics; can online pre-cal well prepare Ap cal? thank you </p>