Columbia Grammar & Preparatory School ("Columbia Grammar", "Columbia Prep", "CGPS", "Columbia") is a school at 5 West 93rd Street on the Upper West Side of Manhattan in New York City. The oldest nonsectarian independent school in the city, it serves students from pre-kindergarten through the twelfth grade and offers a college preparatory curriculum. It was founded in 1764 by what is now Columbia University to teach future freshmen English, Greek, and Latin grammar. The school was originally called The Grammar School of King's College, after the original name of Columbia University. When the college changed its name during the American Revolution, so did the school, to Columbia Grammar School. The school dissolved its formal ties with Columbia in 1865. The word "preparatory" was added in 1969. The school has existed in several locations. In 1907, the school moved to its current location on 93rd Street, off Central Park West. Originally consisting of one building, it added five brownstones through its 1956 merger with the adjacent Leonard School for Girls. A building across the street was built in 1984, followed by two more in 1997 and 2001. An administration building was added to the school in 2009. Source: Wikipedia (en)