At what point does starting an EC look like an applicant is simply trying to polish their application for medical school? I ask because I started a few EC late, but that was a genuine fault in my part in that I did not realize the great diversity of volunteering opportunities out there (even if I find a volunteering opportunity that I like after I apply for MS, I would still apply for it), not because I was box checking for MS. Obviously it looks best to start freshmen year, but let's not wish for something that cannot be changed (I'm not a freshmen, sophomore, or junior). I'm in the situation I'm in now, and assuming that hours are not a problem (>150hrs), how late can an applicant begin an EC (assuming that that a form of clinical work/volunteering have already begun) before ADCOMS classify it as box-checking