The problem I see with ChatGPT being used as a tutor is that way too many of its answers are wrong (when asked an objective question), so it's not really trustworthy, so you'd have to verify its answer elsewhere, which is only going to result in a waste of time.

IMO, for it to be trustworthy in this regard, it would have to essentially perfect and perfecting AI takes a MUCH longer time than making it good, so I don't really see it disrupting the education system any time soon (for that and other reasons).