Question: What county in New York does Japanese Weekend School of New York have offices in?

Context paragraphs:
St. Gregory the Great Church (Manhattan): The Church of St Gregory the Great is a Roman Catholic parish located on the Upper West Side of Manhattan, New York City.  The parish is part of the Archdiocese of New York.  The church building, designed by architect Elliott Lynch, contains the church and parish offices on the ground floor with St. Gregory the Great Parochial School on the next two floors above, the final fourth floor is occupied by the rectory.  The address of the church is 144 West 90th Street, New York, New York 10024-1202; the address of the school is 138 West 90th Street, New York, NY 10024.

Japanese Weekend School of New York: The Japanese Weekend School of New York (JWSNY; ニューヨーク "Nyūyōku Hoshū Jugyō Kō") is a Japanese supplementary school in the New York City metropolitan area.  It has its offices in New Roc City in New Rochelle, New York.  The Japanese Educational Institute of New York (JEI; ニューヨーク日本人教育審議会 "Nyūyōku Nihonjin Kyōiku Shingi Kai") manages the school system, and the JWSNY is one of its two weekend school systems.  The JEI also operates two Japanese day schools in the New York area.

Minneapolis Japanese School: Minneapolis Japanese School (MJS; ミネアポリス日本語補習授業校 "Mineaporisu Nihongo Hoshū jugyō kō") is a Japanese weekend school in the Minneapolis-St.  Paul area.

New Roc City: New Roc City, also known as New Rochelle Center, is an entertainment, retail and residential complex in the Downtown section of the city of New Rochelle in Westchester County, New York.  It is located at 33 LeCount Place, between Main Street North and Main Street South.  The center was built on the site of the former New Rochelle Mall which closed in 1992.

Princeton Community Japanese Language School: The Princeton Community Japanese Language School (PCJLS; プリンストン日本語学校 "Purinsuton Nihongo Gakkō") is a Japanese weekend school in the Princeton, New Jersey area.  It holds weekend Japanese classes for Japanese citizen children abroad to the standard of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), and it also has classes for people with Japanese as a second language.

San Francisco Japanese School: The San Francisco Japanese School (SFJS, サンフランシスコ日本語 "San Furanshisuko Nihongo Hoshū Kō") is a weekend Japanese school serving the San Francisco Bay Area.  The system, with its administrative offices in San Francisco, is a 501(c)(3) non-profit organization, and was the world's second largest overseas Japanese weekend school in 2006.  The school is supported by the Japanese government.  It is known as the best Japanese supplementary school in the world with mostly great teachers.  Although it does have a shortage of teachers due to the large number of students.

New Jersey Japanese School: The New Jersey Japanese School (ニュージャージー日本人学校 , "Nyūjājī Nihonjin Gakkō" , NJJS) is a Japanese school located in Oakland, New Jersey, United States in the New York City metropolitan area.  It is one of the two Japanese day schools operated by the Japanese Educational Institute of New York (JEI; ニューヨーク日本人教育審議会 "Nyūyōku Nihonjin Kyōiku Shingi Kai"), a nonprofit organization which also operates two Japanese weekend school systems in the New York City area.

New York County Courthouse: The New York State Supreme Court Building, originally known as the New York County Courthouse, at 60 Centre Street on Foley Square in the Civic Center district of Manhattan, New York City houses the Civil and Appellate Terms of the New York State Supreme Court for the state's First Judicial District, which is coextensive with Manhattan, as well as the offices of the New York County Clerk.

John J. McNulty, Jr.: John J. McNulty, Jr. ("Jack" or "Big Jack") (1922–2009) was a Northern New York State, U.S.A. political power broker, who held a series of local political offices in Albany County, New York from 1949 and in 6 ensuing decades until the year 2002 and whose crowning political achievement was succeeding at having his son Michael R. McNulty elected to several successive terms as a United States Congressman.  Jack McNulty is said to have been a "co-congressman" for the 2 decades that his son served in the U.S. Congress, before his retirement from the U.S. House of Representatives in 2008.  A fellow Democrat, Jack was a staunch opponent of the entrenched old guard Albany County Democratic political machine Democratic Party (U.S.A.), which was run by Dan O’Connell and which in a political in-fight had unseated his father John J. McNulty, Sr. as Sheriff of Albany County, New York back in 1937.  The high point of Jack's personal political career was when he recaptured that Sheriff's office, being, himself, elected Sheriff of the County of Albany, New York in 1973.  In later life, Jack was a beloved and respected elder statesman of Northern New York State.  The mention of his name at a year 2000 Democratic convention at the Times Union Center caused the full arena crowd of 11,000 people to rise in a spontaneous standing ovation.  "Jack McNulty's word was his bond."  – Democratic New York State Senator Neil Breslin, "For being 87, Jack knew how to change with the time.  Jack connected to people in their 20s."  – Albany County Democratic Chairman Dan McCoy, "the man I often introduced at Democratic Party events as the greatest Democrat I know."  – Rensselaer County Democratic Chairman Thomas Wade

Japanese School of New York: The Japanese School of New York (ニューヨーク日本人学校 , "Nyūyōku Nihonjin Gakkō" ) , also known as The Greenwich Japanese School (GJS), is a Japanese elementary and junior high school, located in Greenwich, Connecticut, near New York City.  As of 1992 the Ministry of Education of Japan funds the school, which is one of the two Japanese day schools of the Japanese Educational Institute of New York (JEI; ニューヨーク日本人教育審議会 "Nyūyōku Nihonjin Kyōiku Shingi Kai"), a nonprofit organization which also operates two Japanese weekend schools in the New York City area.  Before 1991 the Japanese School of New York was located in Queens, New York City, and for one year it was located in Yonkers, New York.

Supporting paragraphs: Japanese Weekend School of New York New Roc City
Answer: Westchester County