I was wondering if it is required to send in 2 science LORs. Some schools just wish to have a pre-health committee leader, which I have. So I am debating which additional letters to send. I am biomedical engineer and econ major; so, I have gathered 2 science, 2 econ, and 2 character references. I feel like the norm/custom is to send at least 2 science & 1 non-science. However, I feel like one of my science letters is just not as good as the rest. Would it be weird to send 1 science and 2 non-science letters along with my character reference letters? Or is my understanding of LORs not the norm?