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 [Internet]. 2026 May 28 [cited 2026 Jun. 25];2(issue 2):1067-78. Available from: https://impactinternationaljournals.com/publications/index.php/ojs/article/view/474