Kompetensi Manajerial Kepala Sekolah Dalam Meningkatkan Kemampuan Profesional Guru Pada SMA Negeri 2 Pulo Aceh Aceh Besar.

: Managerial competence will be very determining toward the advancement of educational institution. A good managerial competence of principal will help improving professionalism of teachers in order to improve the quality of education in State Senior High School (SMA Negeri ) 2 of Pulo Aceh of Aceh Besar. This study aimed to describe the managerial program, the implementation of managerial competence, and the professionalism of teachers in SMA Negeri 2 of Pulo Aceh. To achieve the aim, this study used qualitative approach with descriptive method. The techniques of data collection were observation, interview, and documentation study. The procedures of data analysis were data reduction, data display, and data verification. The subjects of the study were principal, vice principal, and teachers. The result of the study showed that: (1) the principal of SMA Negeri 2 of Pulo Aceh had the skill to encourage staffs, teachers, and employees, optimize the school resources, guide students, and give good model in teaching. The principal has been fully responsible in advancing the school. The attitudes were patient, careful, work hard, and discipline. Therefore, the principal has tried to put himself as a leader that suited the expectation of teachers and other related stakeholders, that the principal had already had managerial programs in improving professionalism of teachers. (2) The principal in improving professionalism of teachers gladly accepted advices and critiques from his subordinates and communicated the policies and problems together. (3) The obstacles faced by the principal in implementing managerial program to improving professionalism of teachers were the inadequate of numbers of teachers and the lack of facilities and infrastructure to support the educational process