Abstract
The Ministry of Education announced officially in February 2007 the standard of teacher's ICT use instruction ability, which is classified into five categories and composed of 18 checklists. Many school teachers were requested to evaluate these checklists themselves, and 2,031 teachers were answered. After conducting factor analysis, four factors of ICT use ability were obtained in this paper. They are (1) ability to teach by ICT in class, (2) ability to instruct regarding information morals, (3) ICT use for preparation and school affairs and (4) Support for students' ICT use. In addition, the values of four factors were investigated respectively about teacher's various attributes and the relation between the attribute and factors.