Jaiyeoba, A. O., Salami M. O. THE IMPACT OF MANAGEMENT BY OBJECTIVES ON THE ADMINISTRATIVE EFFECTIVENESS OF PUBLIC SECONDARY SCHOOLS IN IBADAN NORTH LOCAL GOVERNMENT AREA OF OYO STATE. AJEM [Internet]. 2021 Jun. 29 [cited 2025 May 4];17(03):1-15. Available from: http://www.journals.ui.edu.ng/index.php/ajem/article/view/314