IMPLEMENTATION OF QUALITY ASSURANCE IN IMPROVING COMPETITIVENESS AT PUBLIC MIDDLE SCHOOL. Leadership: j. mhs. manaj. Pendidikan. Islam. Lensi [Internet]. 2025 Jun. 25 [cited 2025 Jul. 30];6(2):182-9. Available from: https://e-journal.staima-alhikam.ac.id/mpi/article/view/3404