The study examines the organizational strategies of Japanese principals in school management. One hundred principals of primary schools in Hiroshima Prefecture were surveyed in 2007. The samples comprised of the differences between the two groups aged 51-55 and 56-60 in terms of how competency level should be exerted in school. The study was conducted to clarify how principals apply specific organizational tasks in schools. The study used a questionnaire developed to measure the school management skills. The questionnaire composed of a 3 points scale for principal competencies, indicating assessment with the following: low competency, moderate competency and high competency. The principals were considered to be high competent in the area of vision for the organization because of their knowledge of the tasks, the materials to be learned, and their strategies for learning to influence academic success. It recommends that skills must be acquired in order to manage the outcomes of instruction in accomplishment of school objectives. Application of professional responsibilities and leadership in addition to some other tasks can add to the teaching quality. The results provide important information about the relevance of organizational strategies to principals' work, and issues to consider in implementing standard-based school organizational strategies. These strategies have been adopted in school system in the form of formal teacher training (konai kenshu) and effective leadership. (Contains 3 tables and 3 figures.)