5A best guess.
Region 1- Cocke County, Morristown West, D. Crockett, D. Boone, Tn High
Region 2- Central, West, Sevier County, Halls, Heritage
Region 3- OR, Karns, Powell, Clinton, Lenoir City, Campbell County
Region 4- Rhea County, Howard, Walker Valley, McMinn County, Ooltewah, East Hamilton
Region 5- Franklin County, Lincoln County, Tullahoma, Shelbyville, Nolensville, Hillsboro, Glencliff
Region 6- Columbia, Page, Spring Hill, Lawrence County, Centennial, Dickson County
Region 7- Hendersonville, Beech, Northwest, Kenwood, Springfield, Portland, Henry County, Hunters Lane
Region 8- Brighton, Mumford, Southwind, Memphis Central, Kingsbury, Overton