As a public school teacher, part of our training on AI is to use it in our classrooms and to talk about using it, like you would in making a citation.

I do use it to construct rote tasks, especially materials for vocabulary practice which are great but aren't worth my energy to spend much time on. I always tell the kids when I've used AI to create sentences, etc. I think it's great for them to see usage modelled responsibly.

It would be a disadvantage to deny kids usage altogether, and prompting AI should be explicitly taught as a skill set. Cheating is definitely an issue, but more and more teachers are moving away from rampant computer usage in class and thinking actively about how to forestall such cheating.