Question: Under which number president did the United States Department of Education begin operating?
Context: Peter B. Davidson is an American lawyer and government official who currently serves as the General Counsel of the United States Department of Commerce.  He was previously the senior vice president for congressional relations at Verizon Communications, general counsel to the United States Trade Representative, vice president for congressional relations at US West and Qwest, general counsel and policy director to the Majority Leader of the House of Representatives, attorney-advisor in the Office of Legal Counsel of the United States Department of Justice, director of congressional and media relations at the United States Information Agency, staffer to Representatives Dick Armey and Bill Frenzel, and law clerk on the United States Court of Appeals for the Tenth Circuit. Safe Schools/Healthy Students (SS/HS) is a grant program funded by the United States Department of Education, United States Department of Justice, and United States Department of Health and Human Services that helps school districts, in partnership with mental health providers, law enforcement and juvenile justice agencies, implement projects that create safe and healthy schools and communities. Jennifer Gillian Newstead is an American attorney.  Currently a partner at Davis Polk & Wardwell, she has been nominated by President Donald Trump to become Legal Adviser to the United States Department of State.  A graduate of Harvard University and Yale Law School, Newstead clerked for Justice Stephen Breyer of the Supreme Court of the United States and for Judge Laurence Silberman of the United States Court of Appeals for the District of Columbia Circuit.  She has served as general counsel of the Office of Management and Budget, principal deputy Assistant Attorney General at the United States Department of Justice's Office of Legal Policy, and associate counsel to the United States President.  Newstead has also served as an adjunct professor at Georgetown Law.  In 2015, "The American Lawyer" recognized her for her work on transatlantic litigation. James Earl Carter Jr. (born October 1, 1924) is an American politician who served as the 39th President of the United States from 1977 to 1981.  A member of the Democratic Party, he also served as the Governor of Georgia prior to his election as president.  Carter has remained active in public life during his post-presidency, and in 2002 he was awarded the Nobel Peace Prize for his work with the Carter Center. Cameron Quinn is an American lawyer, professor, and government official.  She is President Donald Trump's announced appointee to become Officer for Civil Rights and Civil Liberties at the United States Department of Homeland Security.  Quinn previously served in the Office of the Assistant Secretary for Civil Rights at the United States Department of Agriculture, as a senior policy advisor in the Civil Rights Division of the United States Department of Justice, as counsel to the Chairman of the United States Merit Systems Protection Board, and as an assistant attorney general for the Commonwealth of Virginia.  She has also served on the Virginia State advisory committee for the United States Commission on Civil Rights. The Terrorist Screening Center (TSC) is a division of the National Security Branch of the Federal Bureau of Investigation.  It is the duty of the TSC to identify suspected or potential terrorists. Though housed within the FBI, the TSC is a multi-agency organization, including representatives from the United States Department of Justice, the United States Department of State, the United States Department of Homeland Security, the United States Department of Defense, the United States Postal Service, and various private contractors.  It is located in Vienna, Virginia, near Virginia State Route 123. Samuel H. Clovis Jr. (born September 18, 1949) is a United States Air Force veteran, radio host, and academic who is currently serving as the senior White House adviser to the United States Department of Agriculture.  He was national co-chair of the Trump-Pence campaign in the 2016 presidential election.  In January 2017, President Donald Trump made Clovis a senior White House adviser to the USDA until a permanent USDA director would be approved.  In September 2017, Trump nominated Clovis as Under Secretary of Agriculture for Research, Education, and Economics in the United States Department of Agriculture. The United States Department of the Navy (DoN) was established by an Act of Congress on April 30, 1798 (initiated by the recommendation of James McHenry), to provide a government organizational structure to the United States Navy, the United States Marine Corps (from 1834 onward) and, when directed by the President (or Congress during time of war), the United States Coast Guard, as a service within the Navy, though each remain independent service branches.  The Department of the Navy was an Executive Department and the Secretary of the Navy was a member of the President's cabinet until 1949, when amendments to the National Security Act of 1947 changed the name of the "National Military Establishment" to the "Department of Defense" and made it an Executive Department.  The Department of the Navy then became, along with the Department of the Army and Department of the Air Force, a "Military Department" within the Department of Defense: subject to the authority, direction and control of the Secretary of Defense. The Hubert H. Humphrey Building is a low-rise Brutalist office building located in Washington, D.C., in the United States.  Originally known as the South Portal Building, the Hubert H. Humphrey Building was dedicated on November 1, 1977.  It became the headquarters of the United States Department of Health, Education, and Welfare (HEW).  After the department's education component was given to the newly created United States Department of Education in 1979, the newly named United States Department of Health and Human Services (HHS) continued to occupy the structure. The United States Department of Education (ED or DoED), also referred to as the ED for (the) Education Department, is a Cabinet-level department of the United States government.  Recreated by the Department of Education Organization Act (Public Law 96-88) and signed into law by President Jimmy Carter on October 17, 1979, it began operating on May 4, 1980.
Answer: 39th