LIZASOAIN, L.; JOARISTI, L.; LUKAS, J. F.; SANTIAGO, K. Contextual effects of socioeconomic level on academic achievement in obligatory secondary education in the Basque Autonomous Community (Spain). Differential study about socioeconomic level of families and school centers. Education Policy Analysis Archives, [S. l.], v. 15, p. 8, 2007. DOI: 10.14507/epaa.v15n8.2007. Disponível em: https://epaa.asu.edu/index.php/epaa/article/view/56. Acesso em: 7 aug. 2022.