I’ve got the following estimation:
1. Dobyns-Bennett, Science Hill, Morristown-East, Jefferson County
2. Bearden, Farragut, Hardin Valley, Maryville, William Blount, Bradley Central, Cleveland
3. Cookeville, Warren County, Lebanon, Gallatin, Hendersonville, Beech
4. Coffee County, Shelbyville, Riverdale, Blackman, Rockvale, Oakland, Siegel
5. Smyrna, Stewarts Creek, LaVergne, Cane Ridge, Antioch
6. Summit, Independence, Centennial, Franklin, Ravenwood, Brentwood
7. Dickson County, West Creek, Clarksville, Rossview, McGavock, Overton
8. Cordova, Arlington, Bartlett, Houston, Germantown, White Station, Collierville, Whitehaven