INSTRUCTIONAL MATERIAL DISPARITIES AND LEARNING QUALITY IN PUBLIC SENIOR SECONDARY SCHOOLS IN LAGOS STATE, NIGERIA: A SURVEY OF URBAN, PERI-URBAN, AND RURAL LOCATIONS. iijp. 2026;2(issue 2):1067-1078. Accessed June 25, 2026. https://impactinternationaljournals.com/publications/index.php/ojs/article/view/474