Teachers’ Professional Development and Efficiency of Public Primary Schools in Bayelsa State, Nigeria. International Journal of Education Foundations, [S. l.], v. 2, n. 5, p. 387–393, 2025. DOI: 10.33687/ijef.002.05.0064. Disponível em: https://ijef.esciencepress.net/index.php/journal/article/view/64. Acesso em: 5 nov. 2026.