This study examines the relationships among the principal's transformational leadership, development of school vision, and the organizational commitment of teachers. A questionnaire survey entieled 'The status quo and perception of elementary teachers toward school development' was conducted. The researcher collected valid date from 438 on-job elementary teachers in Kaohsiung Major findings are stated as the following (1) Most principals use the strategies of transformational leadership. The stronger the extent that principals exercise transformational leadership, the greater the teachers' organizational commitrment as well as the more effective on the development of school vision. (2) Teachers' perceptions about the principals' leadership, vision development, and organization commitments are functions of personal and school background variables. Most teachers are committed to their schools and are willing to endeavor. In addition, they recognize the importance of the development of school vision. Strategies that could be helpful in the enhancement of teachers' organizational commitment are provided.