The purpose of this study is to analyze factors influencing teachers' job satisfaction using hierarchical linear model. It is very meaningful because of overcoming the existing researches' methodological limitations. In result, school-input variables(facilities, educational objectives) and school-process variables considerably explain the differences among schools. It means that teachers' job satisfaction depends on where schools they belong. Besides, teacher-process variables such as human relationship, participation to decision making also affect teachers' job satisfaction positively. Based on the results as mentioned above, we can conclude that there should be more emphasis on the development of human relationship-centered leadership program for principals, reduction of teachers' work burden, building the system for teachers' participation to decision making and creating open culture for collaboration among teachers.