Implementation of Principal Pedagogic Competence on Teacher Performance Improvement in The Program of (Center Of Excellence) at SMK Negeri 1 Adiwerna, Tegal Regency

. The purpose of this study was to determine the effect of the principal's pedagogic competence on improving teacher performance. This study uses a quantitative survey method approach. The population in this study were all teachers of SMK Negeri 1 Adiwerna totaling 142 teachers with a proportional random sampling technique of 73 teachers. A questionnaire and documentation were used to collect data for this study, which was analyzed using inferential and inductive statistical methods. The prerequisite test for analysis includes the data normality test and the regression linearity test. The testing of hypotheses involves a simple regression test. (1) Principal's Pedagogic Competence was classified as medium with a percentage of 56.6%; (2) Teacher performance was classified as medium with a percentage of 54.7%; and (3) there was a significant influence between Principal's Pedagogic Competence and Teacher Performance with a correlation score of 5.806> 2.145. This study concludes that Principal Pedagogic Competence has a substantial effect on Teacher Performance at SMK Negeri 1 Adiwerna, Tegal Regency.