<![CDATA[General Background Quality culture in educational institutions represents a fundamental foundation for creating a sustainable learning ecosystem. Specific Background Madrasah Aliyah faces challenges including student heterogeneity, professional teacher competence, and infrastructure disparities that require adaptive leadership. Knowledge Gap However, studies exploring the correlation between transformational leadership and quality culture implementation in Islamic secondary education remain limited. Aims This study analyzes the implementation of principal transformational leadership in realizing quality culture at Madrasah Aliyah Sidoarjo. Results Findings show leadership integration across idealized influence, inspirational motivation, intellectual stimulation, and individualized consideration fosters collaborative leadership and continuous improvement, evidenced by 359 Japanese competition trophies over 16 years. Novelty This paper presents a holistic systemic model linking transformational dimensions with internal-external environmental factors in Islamic schools. Implications Strengthening holistic leadership, structured achievement programs, and alumni networks ensures institutional sustainability. Key Findings Highlights transformational leadership integrates four dimensions to build a sustainable quality culture. collaborative leadership and continuous improvement drive long-term student competition achievements. systemic synergy between internal management and external trust secures institutional sustainability. Keywords : Transformational Leadership, Quality Culture, Educational Management, Islamic Education, Madrasah Aliyah]]>
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