One of my concerns about worldwide education:

 Is that if you have AI talking in all languages on earth why would some children think it useful to read or write when you could talk to an AI in any language instead over your smart phone?

OF course then there are the parents worldwide who will insist for obvious reasons that their children learn to read and write for obvious reasons. Why?

Because there are going to be situations where there is no AI to Talk to and your only way to survive some situations on earth is if you can read or write or speak a local language anyway.

NOTE: OF course then there is another way to look at this which is that AI will have infinite patience to Teach literally anyone to read or write any language they want to if that person has the patience to listen. Because the AI is going to have infinite patience in conversations that span the gamut of what people could talk about forever.