FERRAO, M. E. Topics of grade retention in Portugal through the PISA: quality and equity. Education Policy Analysis Archives, [S. l.], v. 23, p. 114, 2015. DOI: 10.14507/epaa.v23.2091. Disponível em: https://epaa.asu.edu/index.php/epaa/article/view/2091. Acesso em: 17 jul. 2024.