Question: George Herbert Walker's great-grandson graduated from where in 1968?

Context paragraphs:
George Herbert Walker IV: George Herbert Walker IV (born April 1969) is the chairman and CEO of Neuberger Berman, one of the largest independent, employee-owned investment management firms.  During Walker's tenure, the firm survived the implosion of its corporate parent, Lehman Brothers, was repurchased by the employees and has been amongst the industry's best performers.  Its growth has been most significant in global equity and fixed income strategies, alternative investments and amongst the largest institutional investors.  The firm's broad capabilities have enabled it to win numerous public strategic partnership mandates, most notably from Teacher Retirement System of Texas and the National Social Security Fund of China.  Its community service programs, NB Impacts, have also been a hallmark.

Fred Meyer (politician): Frederick Ray Meyer, known as Fred Meyer (December 20, 1927 – September 24, 2012), was a businessman from Dallas, Texas, who was the state chairman of the Republican Party of Texas from 1988 to 1994.  He worked in the campaigns of George Herbert Walker Bush, George W. Bush, Phil Gramm, Kay Bailey Hutchison, Rick Perry, and Jeb Hensarling.

George Herbert Walker III: George Herbert Walker III (born 1931 in St. Louis), commonly known as Bert Walker, is an American heir, businessman, diplomat and philanthropist.  A member of the Bush family, he served as the United States Ambassador to Hungary from 2003 to 2006.

Ignite!: Ignite!  Learning, Inc. is an educational software and hardware company co-founded in 1999 by Texas businessman Neil Bush and a year later Ken Leonard.  Neil is a brother of Former President George W. Bush and Former Florida Governor Jeb Bush, and son of former President George Herbert Walker Bush.  Alan Davis resigned as the President and CEO in November, 2009.  Ken Leonard is the current acting CEO.

George W. Bush: George Walker Bush (born July 6, 1946) is an American politician who served as the 43rd President of the United States from 2001 to 2009.  He was also the 46th Governor of Texas from 1995 to 2000.  After graduating from Yale University in 1968 and Harvard Business School in 1975, he worked in the oil industry.  Bush married Laura Welch in 1977 and ran unsuccessfully for the House of Representatives shortly thereafter.  He later co-owned the Texas Rangers baseball team before defeating Ann Richards in the 1994 Texas gubernatorial election.  Bush was elected president in 2000 after a close and controversial win over Democratic rival Al Gore, becoming the fourth president to be elected while receiving fewer popular votes than his opponent.

G. H. Walker &amp; Co.: G.H. Walker & Co. was an investment banking and brokerage firm founded in 1900 by George Herbert Walker, grandfather and great-grandfather of Presidents George Herbert Walker Bush and George Walker Bush, and located at 1 Wall Street.

George Bush High School: George Bush High School is a fully accredited public high school located in unincorporated Fort Bend County, Texas, serving students in grades 9-12.  The school is part of the Fort Bend Independent School District and serves several areas of unincorporated Fort Bend County, including Mission Bend.  The high school is named after the forty-first president of the United States, George Herbert Walker Bush, who attended the school's inauguration.  The school colors are orange, white, and navy blue.  The average annual enrollment is approximately 2,200 students.

George Herbert Walker: George Herbert "Bert" Walker Sr. (June 11, 1875 – June 24, 1953) was an American banker and businessman and the maternal grandfather of President George H. W. Bush and a great-grandfather of President George W. Bush.

George H. W. Bush: George Herbert Walker Bush (born June 12, 1924) is an American politician who was the 41st President of the United States from 1989 to 1993 and the 43rd Vice President of the United States from 1981 to 1989.  A member of the Republican Party, he was previously a congressman, ambassador, and Director of Central Intelligence.  He is the oldest living former President and Vice President.  Previously known as simply "George Bush", since 2001, Bush has often been referred to as "George H. W. Bush", "Bush 41", "Bush the Elder", or "George Bush Senior" to distinguish him from his eldest son, George W. Bush, the 43rd President of the United States.

John Volz: John P. Volz, Sr. (April 22, 1935 – February 12, 2011) was a prominent lawyer from New Orleans, Louisiana.  He was the attorney for the United States District Court for the Eastern District of Louisiana under President Jimmy Carter, a Democrat, and Presidents Ronald W. Reagan and George Herbert Walker Bush, both Republicans.

Supporting paragraphs: George Herbert Walker George W. Bush
Answer: Yale University