Some MCAT course videos need to be revamped. Many (especially in the Organ Systems module) are completely unrelated to the chapter questions (which I assume are most similar to actual MCAT content) and require external resources to understand. Lots of videos don't go into enough depth when it's required for the MCAT, or go into too much depth for unrelated concepts. As someone who's attempting to use Khan Academy exclusively for MCAT content review, this is disheartening :(