My own survey of medical students suggests this is exactly opposite of truth: note-taking was strongly correlated with improved performance, and the class note-

My own survey of medical students suggests this is exactly opposite of truth: note-taking was strongly correlated with improved performance, and the class note-takers, the ones who compiled "official" notes for noteservice were the best prepared, while the consumers of noteservice actually fell below the median. Suggesting that if medical students were self-interested and well informed, then noteservice would be untenable.