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This study aims to examine the influence of academic supervision on teacher performance at SMA Negeri 9 Maros. The research adopts an ex post facto design, utilizing a quantitative methodology combined with sociological and pedagogical approaches. A dual-paradigm design with two independent variables was employed. The study's population consists of 41 teachers, with a saturated sampling technique used for data collection. The research instruments include questionnaires and document analysis. The findings indicate that the implementation of academic supervision significantly affects teacher performance at SMA Negeri 9 Maros. Academic supervision activities conducted by the principal encompass planning, implementation, evaluation, and follow-up actions. Academic supervision is essential for improving and enhancing teachers' capabilities and classroom performance. If the principal's academic supervision is strengthened and improved, teacher performance will also increase; conversely, inadequate supervision may lead to a decline in performance. Academic supervision is a crucial process that must be carried out to improve teaching quality and enhance student learning outcomes. The study implies that academic supervision plays a vital role in shaping teacher performance, demonstrating that the effectiveness of teachers' work is closely linked to the proper implementation of academic supervision.