This study aims to describe instructional leadership, interpersonal communication, discipline and teacher performance and analyze the relationship (1) transformational leadership with teacher performance; (2) interpersonal communication with teacher performance; (3) transformational leadership with teacher discipline; (4) interpersonal communication with teacher discipline; (5) discipline with teacher performance; (6) transformational leadership with teacher performance through teacher discipline; (7) interpersonal communication with teacher performance through teacher discipline. Using this type of quantitative research with a research sample of 117 school principals and kindergarten teachers in the Landasan Ulin Subdistrict who were selected randomly. The results showed: (1) transformational leadership, interpersonal communication, work discipline is in the high classification and teacher performance is in the medium classification; there is a relationship: (2) transformational leadership with teacher performance of 0.106; (3) interpersonal communication with teacher performance is 0.181; (4) transformational leadership with teacher discipline of 0.262; (5) interpersonal communication with teacher discipline is 0.233; (6) discipline with teacher performance of 0.536; (7) transformational leadership with teacher performance through teacher discipline of 0.143; (8) interpersonal communication with teacher performance through teacher discipline is 0.131.