The Charter Oak Schoolhouse is a historic octagonal school building in Schuline, Illinois, located on the Evansville/Schuline Road between Schuline and Walsh. Built in 1873, it served as a public primary school until 1953. The school was one of 53 octagonal schoolhouses built in the United States, of which only three survive. The building is now used as a museum by the Randolph County Historical Society and is listed on the National Register of Historic Places.
