Question: How old are some of the private schools where David Walker was born?

full_context: Document 1: Danny Wells (politician): Daniel 'Danny' Bundy Wells (born March 15, 1940 in Charleston, West Virginia) is an American politician and a Democratic member of the West Virginia House of Delegates representing District 36 since January 12, 2013. Wells served consecutively from January 2005 until January 2013 in a District 30 seat.
Document 2: Montevideo: The Christian Brothers of Ireland Stella Maris College is a private, co-educational, not-for-profit Catholic school located in the wealthy residential southeastern neighbourhood of Carrasco. Established in 1955, it is regarded as one of the best high schools in the country, blending a rigorous curriculum with strong extracurricular activities. The school's headmaster, history professor Juan Pedro Toni, is a member of the Stella Maris Board of Governors and the school is a member of the International Baccalaureate Organization (IBO). Its long list of distinguished former pupils includes economists, engineers, architects, lawyers, politicians and even F1 champions. The school has also played an important part in the development of rugby union in Uruguay, with the creation of Old Christians Club, the school's alumni club.
Document 3: Clifford Walker: Walker served consecutive two-year terms as the 64th Governor of Georgia as a Democrat from 1923 to 1927, after winning with the support of the Ku Klux Klan. Walker made few legislative advances during his term as governor, and is largely remembered for his membership in the KKK and his inclusion of KKK leadership in policy matters throughout his term. His additional political service included the office of Mayor of Monroe, Georgia.
Document 4: Detroit: Detroit is served by various private schools, as well as parochial Roman Catholic schools operated by the Archdiocese of Detroit. As of 2013[update] there are four Catholic grade schools and three Catholic high schools in the City of Detroit, with all of them in the city's west side. The Archdiocese of Detroit lists a number of primary and secondary schools in the metro area as Catholic education has emigrated to the suburbs. Of the three Catholic high schools in the city, two are operated by the Society of Jesus and the third is co-sponsored by the Sisters, Servants of the Immaculate Heart of Mary and the Congregation of St. Basil.
Document 5: Bob Williams (politician): Robert 'Bob' Lynn Williams (born September 10, 1951 in Clarksburg, West Virginia) is an American politician and a Democratic member of the West Virginia Senate representing District 14 since January 2009.
Document 6: David C. Westenhaver: Born in Berkeley County, West Virginia, Westenhaver received a Bachelor of Laws from Georgetown Law in 1886. He was in private practice in Martinsburg, West Virginia from 1886 to 1903, serving as a prosecuting attorney of Berkeley County from 1886 to 1887, and as a member of the Martinsburg City Council from 1902 to 1903. He then moved his practice to Cleveland, Ohio from 1903 to 1917, and was a member of the Board of Education of Cleveland from 1912 to 1915.
Document 7: Private school: Religiously affiliated and denominational schools form a subcategory of private schools. Some such schools teach religious education, together with the usual academic subjects to impress their particular faith's beliefs and traditions in the students who attend. Others use the denomination as more of a general label to describe on what the founders based their belief, while still maintaining a fine distinction between academics and religion. They include parochial schools, a term which is often used to denote Roman Catholic schools. Other religious groups represented in the K-12 private education sector include Protestants, Jews, Muslims and the Orthodox Christians.
Document 8: David T. Walker: David T. Walker (born June 25, 1941) is an American guitarist born in Tulsa, Oklahoma. In addition to numerous session musician duties since the early 1970s, Walker has issued fifteen albums in his own name.
Document 9: Private school: Although most are non-aligned, some of the best known independent schools also belong to the large, long-established religious foundations, such as the Anglican Church, Uniting Church and Presbyterian Church, but in most cases, they do not insist on their students’ religious allegiance. These schools are typically viewed as 'elite schools'. Many of the 'grammar schools' also fall in this category. They are usually expensive schools that tend to be up-market and traditional in style, some Catholic schools fall into this category as well, e.g. St Joseph's College, Gregory Terrace, Saint Ignatius' College, Riverview, St Gregory's College, Campbelltown, St Aloysius' College (Sydney) and St Joseph's College, Hunters Hill, as well as Loreto Kirribilli, Monte Sant Angelo Mercy College, St Ursula's College and Loreto Normanhurst for girls.
Document 10: Charleston, South Carolina: The Roman Catholic Diocese of Charleston Office of Education also operates out of the city and oversees several K-8 parochial schools, such as Blessed Sacrament School, Christ Our King School, Charleston Catholic School, Nativity School, and Divine Redeemer School, all of which are "feeder" schools into Bishop England High School, a diocesan high school within the city. Bishop England, Porter-Gaud School, and Ashley Hall are the city's oldest and most prominent private schools, and are a significant part of Charleston history, dating back some 150 years.
Document 11: David Whitaker (politician): David Whitaker is an American politician and a Democratic member of the Arkansas House of Representatives representing District 85 since January 14, 2013. Whitaker was a candidate for United States House of Representatives for Arkansas's 3rd congressional district in the 2010 election.
Document 12: Charleston, South Carolina: Public institutions of higher education in Charleston include the College of Charleston (the nation's 13th-oldest university), The Citadel, The Military College of South Carolina, and the Medical University of South Carolina. The city is also home to private universities, including the Charleston School of Law . Charleston is also home to the Roper Hospital School of Practical Nursing, and the city has a downtown satellite campus for the region's technical school, Trident Technical College. Charleston is also the location for the only college in the country that offers bachelor's degrees in the building arts, The American College of the Building Arts. The Art Institute of Charleston, located downtown on North Market Street, opened in 2007.
Document 13: Charleston, South Carolina: Charleston is the primary medical center for the eastern portion of the state. The city has several major hospitals located in the downtown area: Medical University of South Carolina Medical Center (MUSC), Ralph H. Johnson VA Medical Center, and Roper Hospital. MUSC is the state's first school of medicine, the largest medical university in the state, and the sixth-oldest continually operating school of medicine in the United States. The downtown medical district is experiencing rapid growth of biotechnology and medical research industries coupled with substantial expansions of all the major hospitals. Additionally, more expansions are planned or underway at another major hospital located in the West Ashley portion of the city: Bon Secours-St Francis Xavier Hospital. The Trident Regional Medical Center located in the City of North Charleston and East Cooper Regional Medical Center located in Mount Pleasant also serve the needs of residents of the city of Charleston.
Document 14: David Walker (West Virginia politician): David Allen Walker (born January 16, 1952 in Charleston, West Virginia) is an American politician and a Democratic member of the West Virginia House of Delegates representing District 33 since January 2009.
Document 15: Mark Hunt (politician): Mark Allen Hunt (born January 23, 1960 in Charleston, West Virginia) is an American politician and a Democratic member of the West Virginia House of Delegates representing District 36 since January 12, 2013. Hunt served consecutively from January 2009 until January 2013, and non-consecutively from January 1995 until January 2001 and from January 2005 until January 2007 in District 30 and District 31 seats. Hunt was a candidate for West Virginia Senate in 2000 and a candidate for the United States House of Representatives for West Virginia's 2nd congressional district in 2006.
ground_truth: 150 years
sub_queries: David Walker >> place of birth Answer: Charleston
How old are some of Charleston 's private school? Answer: 150 years