Aljoudeh, M. and Elyan, R. 2026. Exploring Factors Behind Jordanian Students’ PISA 2022 Mathematics Decline: A Mixed-Methods Study of Teacher and Supervisor Perspectives. Journal of Curriculum Studies Research. 8, 1 (Jan. 2026), 61-82. DOI:https://doi.org/10.46303/jcsr.2026.4.