| Sep. 2008 | Minister of Education, Culture, Sports, Science and Technology |
| Aug. 2008 | Deputy Chief Cabinet Secretary (Fukuda Cabinet/ Reshuffled) |
| Sep. 2007 | Deputy Chairman of the Liberal Democratic Party (LDP) Policy Research Council |
| Sep. 2006 | Chairman of the Committee on Land, Infrastructure and Transport, the House of Representatives |
| Nov. 2005 | Deputy Chairman of the LDP Diet Affairs Committee, the House of Representatives |
| Sep. 2005 | Elected to the fifth term as Member of the House of Representatives |
| Sep. 2004 | Senior Vice Minister for Education, Culture, Sports, Science and Technology |
| Nov. 2003 | Elected to the fourth term as Member of the House of Representatives |
| Nov. 2003 | Director of the Committee on Economy, Trade and Industry, the House of Representatives |
| Nov. 2003 | Director of the Education, Culture, Sports, Science and Technology Division, LDP Policy Research Council |
| Oct. 1999 | Acting Director of the Construction Division, LDP Policy Research Council |
| Oct. 1999 | Chairman of the Committee on Organizations Involved with Commerce, Industry and Medium and Small Enterprises, LDP Party Organization Headquarters |
| May 1999 | Director of the Committee on Education, Culture and Sports, the House of Representatives |
| Apr. 1999 | Elected to the third term as Member of the House of Representatives (by-election in the 8th district of Shizuoka Prefecture) |
| Feb. 1996 | Director of the Committee on Commerce, Trade and Industry, the House of Representatives |
| Aug. 1995 | Parliamentary Vice Minister, Management and Coordination Agency |
| Apr. 1995 | Chairman of the LDP Shizuoka Prefecture House of Representatives 8th Electoral District Branch |
| Sep. 1993 | Director of the Youth Division, LDP Party Organization Headquarters |
| Jul. 1993 | Elected to the second term as Member of the House of Representatives |
| Jun. 1993 | Director of the Intraparty Training Division, LDP Party Organization Headquarters |
| Nov. 1991 | Director of the Committee on Environment, the House of Representatives |
| Feb. 1990 | Elected to the first time as Member of the House of Representatives |
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