The Eaton School, in Norridgewock, Maine, also known as Somerset Grange #18, is a historic community building at Main Street and Mercer Road in Norridgewock, Maine. Originally built in 1866–67 to house a private academy and the local Masonic lodge, it is notable as an early design of Charles F. Douglas, a Maine native whose career began in Somerset County. The building is a fine local example of Second Empire design, and was listed on the National Register of Historic Places in 1988. It has been owned since 1916 by the local chapter of the Grange.