Watertown High School (WHS) is the local high school, built in 1925, for Watertown, Massachusetts, United States. The school is home to the Watertown Raiders, who are best known for their varsity field hockey and boys' basketball programs. Watertown's colors are black and red. The school newspaper is the Raider Times. On May 8, 1930, ex-President Calvin Coolidge was received at the school as town celebrated its 300th anniversary. As a part of the celebration, a national radio program was broadcast from the high school marking the momentous anniversary.

Watertown is a city in Middlesex County, Massachusetts, United States, part of Greater Boston. The population was 35,329 in the 2020 census. Its neighborhoods include Bemis, Coolidge Square, East Watertown, Watertown Square, and the West End.