Al-Shahrani, Mohammed Mufarrih. “The Effect of Regulating the Proportion of Track Students on the Cognitive Learning Outcome of Natural Science Courses in Single-Track Schools”. Journal of Educational and Psychological Sciences 7, no. 38 (October 25, 2023): 20–32. Accessed December 19, 2025. https://www.ajsrp.ojsexpert.com/index.php/jeps/article/view/6990.