I feel like it would be an interesting learning tool cuz I learn a ton on here and it gets me writing without anyone having to hold a gun to my head. I mean like even essay-length or at least essay-worthy treatments of things I respond to in longer-form, and even for the shorter-form stuff
You should probably speak to your heads of IT and safeguarding because there’s plenty of ways it could go wrong. You’d probably want to disable DMs for starters. The poor moderation tools might also be an issue.
I’d suggest you go with software designed with schools in mind as they’ll have worked through a lot of the potential Issues that could come up.