Evaluation of Supervisory Responsibilities of Principals for Effective Administration in Secondary Schools in Yenagoa Local Government Area, Bayelsa State. International Journal of Educational Benchmark, [S. l.], v. 15, n. 1, 2025. Disponível em: https://journals.benchmarkjournals.com/index.php/ijeb/article/view/66.. Acesso em: 7 oct. 2025.