<p>I've already had two teachers send recommendations to the schools i'm applying to (HYPS, MIT, Caltech, Mellon, Hopkins, a few others). However, I've recently had some interactions with a well-known mathematician who (I believer) would write me an excellent rec. Does anyone know if colleges would accept another one, or is two the limit?</p>
<p>My son sent a third. I don't know how colleges look at that, but they did accept him ED, so I guess it didn't transgress too terribly. The college asked for 2 letters from high school teachers of core subjects. My son wanted to send one from another person, a professional in her field with whom he'd worked for a year outside of traditional school, but also wanted to give the college exactly what they asked for (2 from high school teachers). I figured one more wouldn't hurt, the third non-school recommender had a different perspective to add about ds's outside-of-traditional-school studies, and at the very least if one letter got lost or misdelivered they's still have their expected two letters. ;)</p>
<p>I'd say go ahead. It might not help, but I doubt it could hurt. I think lots of students do it.</p>
<p>Thanks! Any other experiences/suggestions?</p>
<p>How extensive are these "interactions"? I mean, if it's a family friend and you've recently spoken to him about your work at a holiday party, I wouldn't send it. His rec would do nothing for your app. But if by recently you mean you got an internship with him and have worked with him extensively and he can say more than, "S/he seems like a great kid who will go far at you university", then go for it.</p>