Declaration of Christian Education emphasizes schools should be the place full of the spirit of the Gospel, and become the best field of holistic education. So far, the presidents of Catholic Secondary Schools achieve the mission of evangelization through effective leadership in Taiwan. The researcher explain the characters of Catholic schools base on Greenleaf’s servant-leadership theory, and quoting the core values of Catholic school. This study described the history of the development of Taiwan's Catholic schools, from the clergy or nun leaders transfer to the laity, and then explored the significance of Servant-leadership and core values of Catholic schools through literature review. Finally, through quantitative research by questionnaires the researcher made conclusion and recommendations.