"All MIT classes are taught by professors ... therefore this is a necessary but not sufficient criteria." That was my experience too. The guy who taught my fr

"All MIT classes are taught by professors ... therefore this is a necessary but not sufficient criteria." That was my experience too. The guy who taught my freshman physics recitation section was a full professor who'd written a few textbooks; I didn't find out until years later that as a young man, he had spent the War in Los Alamos. My differential equations class was taught by the head of the department, and so was my freshman chemistry class. I didn't appreciate how special it all was until I compared notes with friends from high school who had gone elsewhere. One of them told me that his freshman chemistry class consisted of a box of cassette tapes and a classroom section taught by a very overworked grad student.