“Development of Model School Trust to Increase the Competitiveness of Private Schools in the Era of Declining Student Demographics: A Systematic Literature Review”. JISIP (Jurnal Ilmu Sosial dan Pendidikan) 10, no. 4 (November 1, 2026): 2021–2038. Accessed November 4, 2026. https://ejournal.mandalanursa.org/index.php/JISIP/article/view/11264.