This study aims to determine the leadership of the principal as an academic supervisor, supporting factors and inhibiting the implementation of academic supervision. This research uses qualitative approach with case study type. The result is that the principal work with teachers and other stakeholders in achieving school goals, facilities and infrastructure from donors and governments, decisions are taken by deliberation and direct from the principal. The principal has a good relationship with the school and the surrounding community, the role of the supervisor starts from preparing the schedule, using the necessary techniques and then following up, the supporting factor is that teachers have an awareness of the importance of academic supervision and the obstacles consist of: teachers' difficulty in completing learning tools and business of schools' headmaster with departmental tasks. The supervision is done to improve teachers' ability to learn in school.