Tuolumne Joint Powers Authority Member Districts Alpine County Unified School District and Office of Education Amador County Office of Education/Amador County Unified School District Belleview Elementary School Big Oak Flat/Groveland Unified School District Bret Harte Union High School District Calaveras County Office of Education Calaveras Unified School District Columbia Union School District Curtis Creek School District Jamestown School District Mark Twain Union Elementary School District Sonora Elementary School Sonora Union High School District Soulsbyville Elementary School Summerville Elementary School District Summerville Union High School District Tuolumne County Superintendent of Schools Twain Harte School District Vallecito Union School District
