Abstract: With the professional capabilities in school’s administrative operation as the subject and through the literature reviews, the study tried to synthesize five dimensions of professional capabilities in school’s administrative operation as the selection dimensions for enhancing the disciplines and performance in running school by the principals as well as the quality of school operation and efficiency: “school development”, “instructional leadership”, “administrative management”, “public relations” and “professional responsibility”. They also acted as selection dimensions for five professional capabilities that are most important for the school’s administrative operation. The questionnaires were issued to the principals of 34 senior high schools. The causal relationship of selection dimensions for the professional capabilities of school’s administrative operation were obtained through Decision Making Trial and Evaluation Laboratory (DEMATEL), in which the dimension of public relation, administrative management and professional responsibility were the professional capabilities most concerned by the school leaders for school’s administrative operation.