In 1635 laws were passed that required schools be created when an area reached a set population. Since NYC was an early colony they would have had public schools opened under this law and Pennsylvania opened Quaker schools with the start of the colony.
Walden School - New York City - was created in 1914.
Buckley School - New York City - was created in 1913.
Walden School - New York City - ended in 1988.
The first school in New York City is "The Sisulu Walker Charter School Of Harlem.The website for the school is SisuluWalker.org
The web address of the New York City Museum School is: www.nycmuseumschool.net
Walton High School - New York City - was created in 1923.
Garden City High School - New York - was created in 1955.
Cathedral High School - New York City - was created in 1905.
Saint David's School - New York City - was created in 1951.
Preston High School - New York City - was created in 1947.
City University of New York School of Law was created in 1983.
Xavier High School - New York City - was created in 1847.