Its going to be a while until AIs are anything more than very fancy pattern recognition algorithms and data aggregators. Even then I think an "AI teacher" would just be an online course guided by an AI to better tailor it to the individual student.

You'll still need a football coach, ballerina teacher, first aid teacher, etc.. Think of anything you learn today that would suffer from a disembodied voice and maybe a youtube video series being your instructor.
Unless AI gets to the point of triggering muscle groups and programming synapsys for us...then frankly we have much larger questions to worry about than "what does education look like?"