IDRIS, M. K., JADA, H. M., & GARBA, U. . (2025). SCHOOL INSTRUCTIONAL SUPERVISION AND DISPARITIES IN THE ACHIEVEMENT OF EFFECTIVE TEACHING AND LEARNING IN NIGERIAN POST - BASIC SECONDARY SCHOOLS. Sokoto Educational Review, 24(2), 104–111. Retrieved from https://sokedureview.org/index.php/SER/article/view/570