You are correct. But, as a teacher myself, it doesn't matter if you are good or bad as a teacher, you can't give every student what they need to best excel. Eve

You are correct. But, as a teacher myself, it doesn't matter if you are good or bad as a teacher, you can't give every student what they need to best excel. Everything you do is a tradeoff that helps certain types of students, and others not so much. Perhaps make some disinterested in the topic. As a teacher or institute, you decide on a teaching philosophy, which then determines your tradeoffs in practice. And you live with the result. This is no different from, as many on this forum will understand, writing software for a certain type of user. Changing the UI or featureset will tradeoff the type of users interested in your software. You can't satisfy everyone.