I reached out to my SLE leads in 13 communities. A few already replied to you. I also heard from Great Lakes in Michigan. Her reply is below.
We have over 60 in 8 counties that we try hard to interact with. There are 5 regional Intermediate School Districts that oversee all of the public entities in their counties so we work with the superintendents from the ISds for more of the planning for our work. It is tough to reach everyone for sure. I would be happy to talk strategies when in DC or feel free to share my number (989)695-6100.