Pengaruh Kepemimpinan Transformasional Kepala Sekolah dan Kinerja Guru terhadap Prestasi Belajar Siswa di SMP Negeri 3 Tarutung

This study aims to analyze the influence of transformational leadership of school principals and teacher performance on student learning achievement at SMP Negeri 3 Tarutung. The research method used was quantitative with a population of 35 teachers and 151 students in grade VIII. The research sample was determined to be 35 teacher respondents, while the instrument was tested on 30 respondents at SMP Negeri 1 Tarutung and was declared valid and reliable. Data was collected through a closed questionnaire of 38 items. The results of the analysis showed that the transformational leadership of school principals had a positive and significant effect on student learning achievement with a contribution of 29.1%. Teacher performance was also proven to have a positive and significant effect with a contribution of 41.1%. Simultaneously, the transformational leadership of the principal and the performance of teachers have a positive and significant influence on student learning achievement with a contribution of 45.6%. These findings confirm that visionary leadership and optimal teacher performance are important factors in improving the quality of learning. Therefore, strengthening transformational leadership and improving teacher professionalism needs to be continuously developed to support the achievement of student learning achievements in a sustainable manner.