This research is based on researcher curiosity about how two different schools improved their quality of education through the role of the principal. One of school is a large school with a “National Standard”, and the other is an ordinary core school, but both of them have the same capability in improvement good education quality in their schools. This research was purposed to determine (1) the role of principal in improving the quality of education in scholls (2) supporting and inhibiting factors in improving the quality of education in schools. This research was carried out at SDN SN Pasar Lama 1 and SDN Sungai Miai 10 Banjarmasin. This research uses descriptive qualitative research. Using the method used in this study to study definitions and meanings that are more specific to environmental conditions. For those of these are (1) principals (2) teachers and staff (3) school committees (3) parents of students. The results of this research are as follows: (1) the role of the principal as an educator, manager, administrator, supervisor, leader, innovator, motivator, each has its own functions and purposeful and has much impact on improving the quality of education in schools, profesional principals are principals who are able to carry out all of these roles well and with high dedication so that improving the quality of education in schools can be achieved optimally. (2) supporting factors for improving the quality of education in schools are teachers who have the competence of professionalism in carrying out their duties, and the inhibiting factors in improving the quality of education is the lack discipline teachers in providing lessons to students so that the purposes of improving the quality of education cannot be carried out properly. Index Terms: Principal Role, Quality of Education.