<![CDATA[This study aims to describe the principal's instructional leadership and identify supporting and inhibiting factors at SMA Negeri 1 Tana Toraja. The focus of the study covers four main aspects, namely Determination and socialization of the school's vision and mission, Learning arrangement, Improving learning practices, and Improving a positive learning climate. This study uses a qualitative approach with a descriptive research type. Data collection techniques are carried out through interviews, observations, and documentation involving the principal, vice principal, and teachers as key informants. The results of the study show that (1) Determination and socialization of the school's vision and mission, the principal prepares the vision and mission in a participatory manner by involving all school members and socializing it as a clear direction for learning policies. (2) Learning arrangement, the principal plays a role in arranging lesson schedules, managing comfortable classes, and providing technology-based learning resources to create an active and student-centered learning atmosphere. (3) Improving learning practices, the principal carries out routine academic supervision, provides teacher mentoring in preparing teaching materials, and facilitates training for the development of professionalism of teaching staff. (4) To improve a positive learning climate, the principal builds collaborative working relationships, maintains open communication, and implements discipline through an empathetic approach, creating a safe and conducive school environment. Supporting factors for the principal's instructional leadership include exemplary behavior, teacher support, and good cooperation with parents. Inhibiting factors include limited infrastructure, uneven teacher understanding of the curriculum, and challenges in using digital technology. Overall, the research results indicate that the principal's instructional leadership at SMA Negeri 1 Tana Toraja has been effective in supporting improvements in the quality of the educational process at the school.]]>
