Hasbullah, N.N. and Fahyuni, E.F. 2026. The Leadership of School Principals in Improving Teachers’ Professional Competence (Study of MTs Muhammadiyah Jayapura): Kepemimpinan Kepala Sekolah dalam Meningkatkan Kompetensi Profesional Guru (Studi MTs Muhammadiyah Jayapura). Indonesian Journal of Innovation Studies. 27, 2 (Sep. 2026), 10.21070/ijins.v27i2.1364. DOI:https://doi.org/10.21070/ijins.v27i2.1364.