Sydenham High School was first established in 1872 and proposed to serve the whole county.

In 1927 the school hired its first bus from a private owner to service the Harrowsmith area.

By 1947, it was clear the school building needed an expansion to accommodate its growing population, and by 1952 additions cost an estimated $17,000.

Sydenham High School continues to be a well-established rural institution that today services almost 1000 students.

Following its motto "Spirit, Heritage, Success', the school continues to pride itself on its community and history.