IN 1965, Saburo Ienaga, Professor of Japanese History at the Tokyo University of Education, filed a court suit against the Japanese Ministry of Education for one million yen. The plaintiff charged that the Ministry violated his freedom of expression guaranteed in the new post-war constitution by requiring him to revise or expunge as many as 200 passages before authorizing his Japanese history textbook for senior high schools. Since a spate of other authors and scholars publicly supported Professor Ienaga's position, the case received widespread attention throughout the Japanese academic world. It has finally come before the courts in 1968 and is now being challenged by the Ministry of Education. As a result of this case, a study was begun last year of the coverage of the Pacific War in Japanese textbooks, since a number of the disputed passages in Professor Ienaga's social studies textbook concerned Japanese participation in World War II. The textbooks in Japanese history from the following six Japanese high schools were selected for the study: Mitaka High School, an average public high school; Hibiya High School, one of the most prestigious high schools in Japan famous for the inordinately high number of its graduates annually entering Tokyo University; Fukashi High School in Matsumoto, a typical public high school located in the provinces; Taisei High School, an average private school; Suginami High School, a large urban public school; and Kyoikudai High School, a national high school attached to the University of Education. Selected classroom visits were conducted, accompanied by interviews with relevant teachers. Since the two major combatants of the Pacific War were Japan and the United States, the original study was extended in 1966 and 1967 to include the teachings of the Pacific War in six American high schools for a comparative analysis. Selected schools were visited for classroom observations, interviews, and the compilation of the chapters related to the Pacific War in the textbooks in use at that time. Although the following schools were as representative as any small number of American high schools can be, they were selected primarily because of their accessibility during the author's four-month visit to the United States: High Point High School, High Point, North Carolina; Wilmington High School, Greater Boston, Massachusetts; Whitney Point Central School Whitney Point, New York; Berwick High School, Berwick, Pennsylvania; Bloomsburg High School, Bloomsburg, Pennsylvania; and McKinley High School, Honolulu, Hawaii.