Altheimer Unified School District No. 22, previously the Altheimer-Sherrill School District, was a school district headquartered in Altheimer, Arkansas. It served Altheimer, Sherrill, Wabbaseka, and other portions of Jefferson County, including the unincorporated areas of Lake Dick, New Gascony, Pastoria, , Sweden, Tucker, and Wright. The district in the 1993-2006 period had 333 square miles (860 km2) of territory.