This research aims to provide an overview of school principal leadership, teacher competency and commitment to the performance of Yadika High School teachers throughout West Java. This quantitative research with a causality model analyzes the influence of the independent variable on the dependent variable through primary data and secondary data. The population in this study was Yadika High School teacher in West Java, totaling 256 teachers and the sample used was permanent foundation teachers, totaling 42 people. Leadership, competence and commitment are the independent variables while teacher performance is the dependent variable. The results of the research show that leadership, competence and commitment simultaneously influence teacher performance by 59%, while 41% are influenced by other factors not examined in this research. Leadership variables partially influence teacher performance. The competency variable partially influences teacher performance. The commitment variable partially influences teacher performance.