Ayoko, Jennifer. School environment, learners' sex and teachers' effectiveness as cau ses of differential academic performance at "O" level UNEB Examinations among selected schools in Kumi District / Jennifer Ayoko. - Kampala, 2001. - xi, 60p.: tabs ; 30cm. Dissertation (B. Ed., Ext.) - Makerere University, 2001. Includes bibliographical references (p.47-48). Subjects--Topical Terms: School environment----Kumi District----Effective teaching ----Kumi District---- Dewey Class. No.: U 370.158 AYO