Hodgen, Jeremy. “THE ACHIEVEMENT GAP: THE IMPACT OF BETWEEN-CLASS ATTAINMENT GROUPING ON PUPIL ATTAINMENT AND EDUCATIONAL EQUITY OVER TIME”. Academic Journal of Psychology and Education (AJPE) 14, no. 1 (January 30, 2023): 54–78. Accessed September 10, 2025. https://zapjournals.com/Journals/index.php/ajpe/article/view/361.