Lyman High School, located in Presho, South Dakota, is the only high school in Lyman County. It is also the only high school in Lyman School District 42-1, which also includes two elementary schools and a middle school. Lyman High School's athletic teams are nicknamed the "Raiders".Lyman High School includes most of Lyman County including the towns of Vivian, Presho, Kennebec, Reliance, and Lower Brule.