The Winston Preparatory School is a co-ed school located in New York City with a second school that opened in Norwalk, Connecticut in September 2007. Winston Preparatory School is chartered by the State of New York and is a member of ISAAGNY, NYSAIS and NAIS. The New York School is accredited by NYSAIS. The Norwalk school is accredited by the Middle States Association of Colleges and Schools.