Helped somebody homeschool a kid in elementary school a decade ago, the system was pretty user friendly and only really needed a human adult to keep the kid on task and ensure breaks and such. Basically didn't need to help at all.

If the student is willing to learn, and knows to take breaks when they lose focus, I don't see why an AI teacher wouldn't be sufficient for 90% or more of the class-time.... But a human teacher should still be reachable for occasional needs.

Heck one actual teacher could probably manage thousands of students for most classes if AI and digital course systems are there to handle most guidance.

There's definitely still something to be said for in-person schooling... But it isn't necessary for every class... I was bored as fuck in school for a handful of basic classes cause I had to wait for the 'class' to catch up before we moved on. I prefer online courses for anything that doesn't require hands on guidance.