This is all great info! I found out more from the neighbor. She's needing school-supervision for the at-home learning option that will happen, and she was thinking it could be done in the playroom of their purchased but uninhabited house awaiting renovation. The boy has ADHD (mostly hyperactive) and is medicated, and there will be 1-2 other students. We got the email conversation going, so it should be interesting to hear more as it develops.
I really appreciate all you've shared, so please let me know if you hear of other people setting up something like this.