The old Groton High School is a historic school building at 145 ain Street in Groton, Massachusetts. It has also variously been known as the Prescott School, Groton Junior High School, and Butler School. The building is two stories, with a flat roof. It is divided into four sections: a central portion that protrudes slightly from the main facade, which is topped by a pedimented gable, two wings that flank the central portion, and a rear section behind the central building. Because the building sits on a sloping lot, the rear section is actually three full stories; its ground floor section is made of concrete, while the rest of the building is predominantly made of brick, laid in a variation of an English cross bond pattern. The central portion was built in 1871 to a design by Henry M. Fran