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Ugwuanyi, Bernadine Amrachi and Ebulum, Genevieve Chimaoge (2020) APPLICATION OF ITEM RESPONSE THEORY ON DEVELOPMENT OF ACHIEMENT TEST IN SECONDARY SCHOOL ECNONMICS IN ENUGU EDUCATIONAL ZONE, ENUGU, NIGERIA. British International Journal of Education And Social Sciences, 7 (11). pp. 17-25. ISSN 3342 – 543X