Abo Hadi, S.H. and A’alem, T.A. 2023. Detecting Differential Items Functioning of a Criterion-Referenced Test for a Calculus Course (1) According to the modern theory; for students at Sana’a University according to the variables (gender, system, college). Journal of Educational and Psychological Sciences. 7, 13 (Apr. 2023), 1–21. DOI:https://doi.org/10.26389/AJSRP.C171222.