| November 2003 | Minister of Education, Culture, Sports and Technology |
| September 2003 | Minister of Education, Culture, Sports and Technology |
| October 2002 | Senior Vice Minister of Education, Culture, Sports and Technology |
| January 2002 | Chairman, Committee on Education, Culture, Science and Technology, H.R. |
| October 2001 | Director, Special Committee on the Prevention of Terrorism |
| May 2001 | Deputy Chairman, Diet Affairs Committee, LDP |
| January 2001 | Senior Vice Minister of Education, Culture, Sports and Technology |
| December 2000 | Senior State Secretary for Education, Science, Sports and Culture |
| July 2000 | Deputy Chairman, Policy Research Council, LDP |
| October 1999 | Senior State Secretary for Education, Science, Sports and Culture |
| August 1998 | Director, Committee on Science and Technology, H.R. |
| October 1997 | Deputy Chairman, Research Commission on the Educational System, LDP |
| October 1997 | Member, Committee on the Budget, H.R. |
| November 1996 | Director, Education Division, LDP |
| November 1996 | Director, Committee on Education, H.R. |
| January 1996 | Parliamentary Vice-Minister of Justice |
| October 1995 | Deputy Chairman, Policy Research Council, LDP |
| October 1993 | Member, Japanese National Commission for UNESCO |
| September 1993 | Head, Education Section, Liberal Democratic Party (LDP) |
| February 1990 | Elected to the House of Representatives (H.R.) |
| April 1976 | Elected to the Yamaguchi Prefectural Assembly |
| April 1967 | Entered Seibu Oil Co., Ltd |
