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, New Mexico, United States, v. 7, n. 38, p. 20–32, 2023. DOI: 10.26389/AJSRP.C190723. Disponível em: https://www.ajsrp.ojsexpert.com/index.php/jeps/article/view/6990. Acesso em: 20 dec. 2025.