This research was conducted with the purpose of describing the general effectiveness of the academic supervision for teachers with three main focus, which is to analyze the competence of supervisors; academic supervision program implementation and the results and impact of academic supervision. The research location is SMU Maria Mediatrix Ambon, Maluku province, Indonesia. The subjects were Principal and 9 regular teachers who teach in high school Mediatrix Ambon. Data collection instrument of this study is the researchers themselves are supported with interview guides. Techniques of data collection is done by participant observation, interviews and documentation study. Data was analyzed using descriptive and analytical analysis techniques. The results showed that the supervisors do not yet have sufficient competence as a prerequisite for implementing the academic supervision; academic supervision has not been done effectively explored from two sources: First, from the supervisor; 1) the time constraints (many administrative tasks that must be completed); 2) has not been programmed in a participatory manner; 3) a lack of understanding of the supervisor of the concept, theory and practice of supervision; 4) lack of understanding of the scientific supervisor of substance related to the field of study is taught by each teacher. Second, from the teacher; 1) a commitment to low quality; 2) the motivation of many teachers who work solely for the pursuit of prosperity.