This study was motivated by the importance of teacher job satisfaction in improving the quality of education, particularly in public junior high schools in Banjarbaru City. The purpose of this study was to analyses the direct and indirect influence of principals’ transformational leadership, interpersonal communication, and work climate on teacher job satisfaction in public junior high schools in Banjarbaru City. This study employed a quantitative approach using a survey method involving 219 public junior high school teachers selected through proportional stratified random sampling. The research instrument was a five-point Likert scale questionnaire that had been tested for validity and reliability. The results showed that principals’ transformational leadership, interpersonal communication, and work climate had a positive and significant influence on teacher job satisfaction. In addition, work climate was proven to mediate the influence of principals’ transformational leadership and interpersonal communication on teacher job satisfaction. These findings confirm that inspirational leadership, effective interpersonal communication, and a positive work climate can enhance teacher job satisfaction, which in turn contributes positively to educational quality.
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