 In 1963–64, he was an American Field Service foreign exchange student in Watseka, Illinois, where he graduated from the local high school in June 1964.After German Abitur, Ischinger studied law at the University of Bonn, Germany and the University of Geneva, Switzerland and obtained his law degree in 1972.He earned a master's degree from the Fletcher School of Law and Diplomacy in Medford, Massachusetts, in 1973.