This study aims to analyze the influence of work discipline, physical work environment, and interpersonal communication style on the performance of State Civil Apparatus (ASN) teachers at SMAN 1 Menganti. The research was motivated by the fact that the school had not yet reached its target of 25% of teachers achieving an above-expectation performance rating. This study employed a quantitative approach with an explanatory research design. The population consisted of 66 ASN teachers, all of whom were used as the sample through a saturated sampling technique. Data were collected using a five-point Likert-scale questionnaire and analyzed with SPSS through instrument testing, classical assumption tests, multiple linear regression analysis, and hypothesis testing. The results show that work discipline, physical work environment, and interpersonal communication each have a positive and significant effect on teacher performance (significance values of 0.000, 0.001, and 0.002 respectively). The three independent variables simultaneously explain 43.2% of the variation in teacher performance (Adjusted R Square). This study is expected to serve as a consideration for schools in strengthening human resource management through reinforcing discipline, providing a comfortable work environment, and developing effective interpersonal communication.
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