alt Hacker NewsTutor mode sucks because even if it was actually accurate and didn't hallucinate, it isn't scoped to what the class is actually covering within a given topic.
Best AI is still your own brain, trained on paying attention in class and reading the assigned content.
One to one human tutors are the best way of educating kids and they are not scoped to what a class is covering. They teach the kid as an individual: they are effective because they can adjust to the kids abilities and interests.