M.I., JimohA.T., OlutolaAbdulrasaq Olatunji, BALOGUN2019-10-172019-10-172015http://hdl.handle.net/123456789/2685This study investigated school-based assessment as a determinant of students' achievement in WAEC and NECO SSCE in geography. The ex-post facto research design was employed for this study. The population of this study consisted of all the senior secondary school certificate geography candidates in the public schools in Ilorin metropolis while the target population comprised all candidates who sat for both the WAEC and NECO geography SSCE in 2011/2012 and 2012/2013 academic sessions. Ten public Senior Secondary Schools were randomly sampled. A total of five thousand eight hundred and eighty- four (5, 884) candidates results that sat for the WAEC and NECO Geography SSCE for the academic session 2011/2012 and 2012/2013 in Ilorin metropolis were considered. Proforma and questionnaire were used to collect data. Analysis of data was carried out using Pearson Product Moment Correlation (PPMC) statistic to test the two hypotheses postulated at the alpha level of 0.05. The findings revealed that there were the low positive and moderate relationship in both hypotheses tested between School-Based Assessment and the students' performance in WAEC and NECO Geography SSCE respectively. Based on these findings, it was recommended that teachers and officers in the examination bodies indicted in manipulating school-Based assessment scores should be regarded as saboteur and be made to face the same charges like those that engaged in examination malpractice.enSchool-Based AssessmentDeterminantStudents' AchievementWAECNECOArticle