

It’s a valid concern, but considering that quite a few rockets, to include some currently in use, can contain quite large amounts of some truly nasty chemicals already, and apparently can be made acceptably safe despite this, I’d bet that it’s probably possible to manage that risk or find flight paths that minimize exposure in the case of an accident. For that matter, we’ve launched radioactive materials into space before, some space probes use decay heat for a power source.
I think that the general idea of artificial intelligence in education hold some promise, in the sense that if you could construct a machine that can do much of the work of a teacher, it should enable kids to be taught in an individual way currently only possible for those rich enough to afford a private tutor, and such a machine would be labeled as an AI of some kind. The trouble is, like with so many other things AI, that our AI technology just doesn’t seem to be up to the task, and probably just won’t be without some new approach. We have AI just smart enough for people to try to do all the things that one could use an AI for, but not smart enough for the AI to actually do the job well.