This research investigates how principal leadership, organizational culture, and teacher welfare impact teacher performance in public junior high schools located in South Sorong. Utilizing a quantitative methodology, data were gathered through surveys administered to teachers from multiple schools within the area. The study adopts an ex-post facto design. The target population comprised all 248 teachers employed at public junior high schools in South Sorong Regency. A total of 155 teachers were selected as the sample using a cluster random sampling method. The data were analyzed using a range of statistical techniques, including validity and reliability testing, normality checks, correlation analysis, regression analysis, and hypothesis testing. The findings reveal the following: (1) principal leadership has a positive and significant effect on teacher performance, contributing 11.6%; (2) organizational culture positively and significantly affects teacher performance by 15.6%; (3) teacher welfare has a positive and significant influence, accounting for 29.6%; and (4) the combined effect of principal leadership, organizational culture, and teacher welfare on teacher performance reaches 32.3%.
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