: Education supervision constitutes efforts made by school principals on teachers, counsellors, and other educational staff at school in order to improve the quality of teaching and learning. The purpose of this study was to find out 1) the process of supervision planning development of the school principal to improve the professionalism of school counsellors, 2) the implementation of education supervision program by the school principal to improve the professionalism of school counsellors, 3) the follow up by the school principal in the implementation of education supervision to improve the professionalism of school counsellors. This is a descriptive study using qualitative approach. Data were collected through observation, interviews and documentation. The subjects of the research were the school principal, the vice principals, and the school counsellors. The results of the research show that 1) supervision program for teachers was developed at the beginning of the semester involving vice principals, school counsellors, and other subject teachers. 2) The implementation of the supervision followed the plan that had been developed. The supervision techniques include teachers' meeting, classroom observation, and one-on-one conversation. There was observation guide during classroom observation, however, it was not fully used because sometimes during the supervision school counsellors were not in classrooms for health reason, or on other school related agenda. 3) The follow up of supervision was done by giving feedback to the observed school counsellors through one-on-one conversation with the focus of a better activity implementation.