My problem with some of my teachers was that they could tell me when someone had created something. Maybe even speculate why they did it. But not how they did it. I had art teachers who couldn't draw or paint worth a damn. And music teachers who were not very good musicians. I didn't want to hear about art history every week. That's a history teacher. I didn't want to hear about music history much of the time...or simply be a replay device for "classics" that had been performed ad nauseum for two centuries.