The final structure was opened in March 1923. The old building became the elementary school, but it continued to house the Agriculture and Industrial Arts programs, as well as the Superintendent's office, for the town of Barton. When the regional high school opened in 1967, the elementary school moved to the vacated high school building. The old elementary school building was later sold and razed and the Federated Church was built on the site. The old high school did not have a regulation-sized gymnasium. This was not prejudicial to its use until the 1950s. After that time, The boys' and girls' basketball teams practiced there, but hosted home games at other locations. For many years, OHS' "home court" was at Derby High School.