This study is motivated by the crucial urgency of the madrasah principal's leadership role in responding to the declining fluctuation in student learning achievement due to suboptimal student involvement and teacher work motivation. The main objective of this study is to identify and empirically analyze the direct and indirect effects of the madrasah principal's leadership on teacher work motivation and its impact on realizing improved student learning achievement at MTs Al-Ashdariyah Pakenjeng Garut. Using a causal-effectual quantitative approach, this survey research involved a census population of 30 teachers. Primary data were collected through Likert scale questionnaires, supported by observation and documentation. Data analysis was performed using the Structural Equation Modeling-Partial Least Square (SEM-PLS) technique with SmartPLS software. The results convincingly prove that the madrasah principal's leadership has a positive and highly significant effect on teacher work motivation. Furthermore, teacher work motivation is proven to have a positive and significant effect on improving student learning achievement. The novelty of this study confirms that teacher work motivation acts as a highly effective mediator bridging the influence of the madrasah principal's leadership on student academic achievement. Strengthening managerial innovation and supervision is recommended for education quality.
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