I like your subject line!
You might try posting on the Homeschoolers board here on CC, if you haven’t already. You also might google homeschooling networks/co-ops in MA to see if you can find a group with a website you can post on. You could even try the HS Class of 2018 thread here on CC. I haven’t checked it this year, but sometimes the students themselves are talking about it.
I checked on Art’s blog at Compass Prep and MA does not show up yet. Best of luck to you!