Nwosu, Patience NgoziBala, Sani AbdullahiAdikwu, James Musa2023-12-132023-12-132016-05-01Adediran, S. A. (2008). Self-Concept and Academic Performance of Nigerian Adolescents. In S. Adesina (Ed) Journal of Teacher Education. Ife: University of Ife, Adeyemi Ajayi, I. A. (1999). Analysis of Teachers' Job Performance and Secondary School Students' Academic Achievement and Their Relationship. African Journal of Educational Research Azizi et-al, (2005). Self-Concept, Study Behaviour and Health Attitude of Male and Female Nigerian Adolescents. (An unpublished manual, Department of Guidance and Counseling, University of Ibadan. Cooley, N. (2002). Prototypes in persons perception. Advances in experimental social psychology, vol. 12,pp.3—52. • Gadeyn, E., Ghesquiere, P., & Onghena, P. (2004). Longitudinal relationship between parenting and child adjustment in young children. Journal of Clinical Child and Adolescent Psychology, 22,347-358. Hart, S .A. (1999). The construction of the self: A developmental perspective: New York: The Gilfordpress.https://keffi.nsuk.edu.ng/handle/20.500.14448/3958The study was designed to investigate the relationship between adolescent self-concept and academic performance of Senior Secondary School Students in Keffi Local Government Area of Nasarawa State. Two hypotheses guided the study. The study adopted the correlation design. A total of350 respondents which was the population of the senior secondary school students ss 2 were used. Self-concept items developed by Carl Rogers (1957) were adapted and renamed Self Concept Academic Performance Inventory (SCAPI) for use. The data collected was analysis using Pearson Product Moment Correlation and t-test statistics was used to test the hypotheses at 0.05 level of significance. The study found that there is a significant relationship between positive self concept and academic performance of students. Students with positive self concept should be encouraged to sustain the tempo through the numerous ways. There is a significant negative relationship between negative self concepts on academic performance of adolescent students.enAdolescent, Self concept, student, academic performanceArticle