RLS meaning in International ?

The Roxbury Latin School is a private boys' day school that was founded in 1645 in the town of Roxbury (now a neighborhood of Boston, Massachusetts) by the Rev. John Eliot under a charter received from King Charles I of England. It bills itself as the "oldest independent school in continuous existence" in North America.

Located since 1927 at 101 St. Theresa Avenue in the West Roxbury neighborhood of Boston, the school now serves roughly 300 boys in grades seven through twelve. Eliot founded the school "to fit [students] for public service both in church and in commonwealth in succeeding ages," and the school still considers instilling a desire to perform public service among its principal missions.

The school's endowment is estimated at $189 million, the largest of any boys' day school in the United States. The school maintains a need-blind admissions policy, admitting boys without consideration of the ability of their families to pay the full tuition.

Its previous headmaster, F. Washington Jarvis, who retired in the summer of 2004 after a 30-year tenure, published two books about Roxbury Latin: a history of the school and a collection of his speeches to boys at Roxbury Latin (With Love and Prayers). The title of the former, Schola Illustris, was the phrase Cotton Mather used to describe the school in 1690, following John Eliot's death. In addition to those books, Richard Walden Hale published Tercentenary History of the Roxbury Latin School in 1946.

Roxbury Latin is a member of the Independent School League and NEPSAC. It has an unofficial sister school relationship with the Winsor School in Boston as well as an African brother school, the Maru a Pula School.