The instructions on the supplemental say: For students attending a school without a pre-medical committee, two letters of recommendation are required from professors who know you well and who have taught you in a formal classroom setting. One letter should be from a faculty member in your most recent major or degree-granting department and the other may be from any professor of your choice. An applicant may submit additional letters of recommendation, but the Committee prefers that you send no more than three letters (3) in total. ---- My school does not have a committee. I'm submitting 3 letters, which is the max. Two of them are set in stone -- one is from a non-science professor who knows me well, and one is from an MD who I have worked for for 3 years. The other is going to be from a chemistry professor, which was my major. I want to submit the one from the professor who taught me in an advanced lab class that had both undergrad and graduate students; it was a 2-credit-hour class. He was also my advisor for undergraduate research. But, the other professor that I have a letter from taught me in two typical courses -- not a lab course and undergrad research. So my question is really this: since the instructions say have a letter from someone who "taught you in a formal classroom setting" do you think the first letter is ok?