The Visionary Leadership of Headmaster in Improving School Achievement. Journal of Research in Educational Management, [S. l.], v. 1, n. 1, p. 11–21, 2022. DOI: 10.71392/jrem.v1i1.3. Disponível em: https://journal.literasantri.com/index.php/jrem/article/view/3. Acesso em: 20 may. 2026.