Influence of principals’ demographic variables on effective management of secondary schools in jalingo education zone, taraba state, nigeria. International Journal of Education Foundations, [S. l.], v. 3, n. 3, p. 507–514, 2026. DOI: 10.33687/ijef.003.03.00136. Disponível em: https://ijef.esciencepress.net/index.php/journal/article/view/136. Acesso em: 20 sep. 2026.