Sule Muhammad, Sheu Adaramaja Lukman. Development and Application of Item Response Theory (IRT) in Calibrating Civic Education Test Items among Secondary School Students in Zamfara State, Nigeria. dirosat [Internet]. 2026 Aug. 20 [cited 2026 Aug. 20];4(2):238-47. Available from: https://dirosat.com/index.php/i/article/view/232