The principal plays a strategic role as a leader responsible for directing all school resources. This study aims to determine the influence of visionary leadership, organizational culture, and work motivation on teacher performance, both partially and simultaneously. This research employs a quantitative ex-post facto approach with a causal correlational design. The sampling technique uses cluster sampling, resulting in the selection of three public junior high schools in Cisauk District with a total of 107 teachers. The pilot test aims to determine validity using the Pearson product-moment correlation and the reliability of the instrument. Data collection was conducted through a survey using questionnaires. The data analysis technique uses multiple linear regression analysis, which was preceded by prerequisite tests. The results show that partially, visionary leadership has a significant effect on teacher performance (t-value = 11.110 > t-table = 1.983, Sig. 0.000 < 0.05), organizational culture has a significant effect on teacher performance (t-value = 6.629 > t-table = 1.983, Sig. 0.000 < 0.05), and work motivation has a significant effect on teacher performance (t-value = 9.730 > t-table = 1.983, Sig. 0.000 < 0.05). Simultaneously, visionary leadership, organizational culture, and work motivation significantly influence teacher performance in public junior high schools in Cisauk District, Tangerang Regency (F-value = 222.191 > F-table = 2.696, Sig. 0.000 < 0.05). Therefore, the improvement of teacher performance is not influenced by a single factor alone but is jointly affected by visionary school leadership, a conducive organizational culture, and high teacher work motivation.
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