The indieweb bouncing around can be a bit confusing.
I was thinking of a sort of SPLOT tool for a multisite that you might be interested in.
Basically a button you could add to a post that would allow viewers to clone that post to their own site.( It sounds like Tom has a good starter).
It could be used by a teacher to give a template to a pupil which they would then edit.
A wee bit of blue sky on a holiday.