Sylvan School

Sylvan School, also known as Pig Ankle School, Sylvan Community Building, Sylvan Sunday School and Church of the Firstborn, is a historic one-room school located at Naylor, Ripley County, Missouri, USA. It was built in 1926 and is a one-story, one room rectangular frame building. It measures 48 feet 4 inches by 38 feet 4 inches and has a hipped roof. Classes were conducted in the building until 1956.

It was added to the National Register of Historic Places in 2002.