Chen , C.H. and Mohaiyuddin, N. 2026. FROM CHAOS TO COHESION: ABILITY GROUPING, SOCIAL LOAFING, AND THE RISE OF DATA-DRIVEN GROUP FORMATION IN SECONDARY SCHOOL CLASSROOMS. INTERNATIONAL JOURNAL OF EDUCATION, PSYCHOLOGY AND COUNSELLING (IJEPC). 11, 63 (Jun. 2026), 747–762. DOI:https://doi.org/10.35631/IJEPC.1163045.