Franklin High School is a public high school located in Franklin, Massachusetts, United States.Their main sports rival is King Philip Regional High School in neighboring Wrentham, Massachusetts. Franklin High School started in the former town hall which has now been demolished. In 1924 they moved into a new high school which is right now Davis Thayer Elementary, and at the time was one of the best designs for a high school. In 1962 again they built the right now Horace Mann Middle school/ Oak Street Elementary. Shortly after due to the growing population, they built a new high school, which opened in 1971. 2005, the school was placed on Warning Status for Accreditation by the New England Association of Schools and Colleges (NEASC), so a new Franklin High School was constructed on what was once the old high school's athletic fields. It was first open to the public about 2 weeks before the first day of school (September 3, 2014.). They demolished the old FHS and the next year completed the athletic fields.