BADAKHSHAN TOROGHI, Esmat; SOLEIMANPOUR OMRAN, Mahboobeh; FAZLLI, Rokhsareh. Validation of a Model for the Quality of Education in Multi-Grade Classrooms in Primary Schools. Iranian Journal of Educational Sociology, [S. l.], v. 5, n. 4, p. 43–54, 2022. Disponível em: https://qijes.com/index.php/ijes/article/view/1104.. Acesso em: 9 jun. 2025.