<![CDATA[This study aims to determine and test the influence of: (1) principal leadership affects teacher performance; (2) Does principal leadership affect school infrastructure; (3) Does principal leadership affect student learning achievement; (4) Does teacher performance affect student learning achievement; and (5) Does infrastructure affect student learning achievement. The population of the study was students at SMA Negeri 1 Sunggal, North Sumatra Province with a sample of 235 students. The research method is a quantitative method with Smart-PLS analysis. The results of the study concluded: (1) principal leadership affects teacher performance by 51.8%; (2) principal leadership has an influence on school infrastructure by 47.8%; (3) principal leadership affects student learning achievement by 22.4%; (4) teacher performance affects student learning achievement by 24.7%; and (5) school infrastructure affects student learning achievement by 47.5%. Overall, the results of the study indicate that student learning achievement is influenced by principal leadership which is moderated by teacher performance and school facilities and infrastructure by 53.4%; while the remaining 46.6% is determined by other factors.]]>
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