I'm not applying to med school for another year and a half, but I'm starting to thing about letters of reference now. I'm considering two people for my academic reference: (1) a prof I've known for 3 years who would probably write a positive letter ( I had a small seminar class with him) and (2) a high school teacher I've known for 5 years who would write a wildly positive letter and who's already told me he wants me to be his children's doctor. I'd like to use the high school teacher, but I'm not sure if adcoms would look down on this, like I couldn't meet one prof in 3/4 years of undergrad. Or should I try to get to know some other prof more closely this year, before I apply. What do you guys think? Thanks for any help!