The aim of this research is to describe the Principal's Leadership, Teacher Performance, Principal's Role and SBM Implementation, analyze the influence of Principal Leadership, Teacher Performance and the Principal's role simultaneously on the implementation of school-based Management, analyze the influence of Principal Leadership, Teacher Performance and Role The School Committee has a partial impact on the Implementation of School-based Management and finds out which of the Principal's Leadership, Teacher Performance and the role of the School Committee have a dominant influence on the Implementation of School-based Management in High Schools and Vocational Schools in Ende Regency. This research method is descriptive with a quantitative approach. The population in this study was 250 respondents. The sampling technique used random sampling so that the total sample in this study was 154 respondents. Data analysis techniques use descriptive analysis and multiple linear regression analysis. The results of this research show that Principal Leadership, Teacher Performance, Role of School Committees and Organizational Culture simultaneously influence the Implementation of School-Based Management, there is a partial influence of the variables Principal Leadership, Teacher Performance, Role of School Committees and Organizational Culture on the Implementation of School-Based Management and The Organizational Culture variable has a dominant influence on the Implementation of School-Based Management in Ende Regency High Schools and Vocational Schools.