BatesParents2019 and PolarMama have given you good advice. What I can say is that based on my knowledge of Princeton recruiting, if you were the coach’s top recruit and your courses have been rigorous, I don’t think that your ACT score would keep you out. However, if you could raise your scores (whether by retaking the ACT or taking the SAT) it would be helpful. In addition, if you have AP scores that are 4s or 5s, that could also be an important factor.