During the early 1950s, Barrington's population began to grow as a result of the increasing availability of the automobile and the baby boom.

[11] In 1870, a Brown University alumnus named Isaac F. Cady established the Prince Hill Family and Day School.

[14] During the 1950s, Barrington's population grew as a result of the post-World War II baby boom and the increasing availability of the automobile.

[15][16][17][a] In 1964, a construction project doubled the size of the original building; twenty years later, the library was expanded in addition to renovation of the art and science rooms.

Run under the Barrington Boosters, these sports include cross country, soccer, football, field hockey, cheerleading, tennis, volleyball, swimming, track and field, basketball, wrestling, ice hockey, baseball, lacrosse, and softball.

[21] Barrington High School participates in the Rhode Island Interscholastic League and has won several championships since 2008.