“When Teachers Become School Heads: Administrative and Instructional Competence of Teachers-in-Charge and Their Relationship to Students’ Academic Performance”. The International Review of Multidisciplinary Research 1, no. 5 (May 8, 2026): 157–166. Accessed July 17, 2026. https://vertexcorp.org/index.php/irmr/article/view/408.