The purpose of this study was to determine (1) influence of principal leadership and motivation to work jointly affect the performance of teachers, (2) influence of school leadership on teacher performance, (3) influence motivation to work on teacher performance Wonosari Junior High School. The population in this study all junior high school teacher Wonosari totaling 95 peoples. The sampling technique used is the census. The data analysis technique used is the multiple linear regression. The result of research that (1) School leadership and motivation to work jointly significant effect on teacher performance, (2) School leadership have a significant effect on teacher performance, (3) Work motivation significantly influence the performance of Junior High School teacher Wonosari.