The Watertown High School addition and renovation project includes renovation of science labs, kitchen and food service facilities, auditorium, gymnasium, and locker rooms; a partial roof replacement and replacement of non-energy-efficient windows; the addition of a new media center, music classrooms and administrative offices.

The project also included Code compliance updates, mechanical, electrical, plumbing, and fire protection system upgrades, safety and front entrance security improvements, removal of asbestos containing materials, renovated athletic fields including new synthetic turf fields, additional parking and new bus and parent-drop areas.