The Analysis of School Principal Leadership Style and Supervision Model in Improving of Teacher Performance in Madrasah Aliyah at Jambi City

School is an organization that is complex and unique, because there are various elements that are interrelated resources and is a place of human cultivation. Whatever form the principal's leadership style should provide motivation to work for the improvement of work productivity of teachers and student learning outcomes. As a supervisor, the principal task is to provide guidance, support, monitoring and assessment in terms of the development of education, improvement of teaching programs to create a better learning situation. For that, we need teachers who have adequate scientific capacity, passion, commitment and high performance. This study uses a quantitative approach with survey method. The results of this study showed that the overall (average) types of school leadership in Madrasah Aliyah in Jambi type autocratic about 44.5%, about 22.3% Democratic type, and the type of laissez-faire as much as 35%. The models were run supervision of school principals is the conventional model of approximately 33.4%, scientific models 22.3%, clinical models as much as 33.4%, and Artistic models as much as 11%. Furthermore, the performance of teachers in the categories of being as much as 48%, low as much as 29%, and the category of high 13%. Therefore, there needs to be training for principals, especially related to leadership, organization and supervision of education and teacher performance. This meant that the principals understand completely and thoroughly associated with those aspects that affect the performance of teachers and education services, particularly in Madrasah Aliyah.