Calleb , Oribo M., and Wanami Simion. 2021. “ The Effect of Artificial Classroom Illumination on Students’ Academic Achievement in Public Boarding Secondary Schools in Nairobi County of Kenya ”. African Journal of Education,Science and Technology (AJEST) 6 (4):Pg 295-306. https://ajest.org/index.php/ajest/article/view/489.