Secondary school: past and present. Práxis Educativa, [S. l.], v. 6, n. 1, p. 67–78, 2011. DOI: 10.5212/PraxEduc.v.6i1.0006. Disponível em: https://revistas.uepg.br/index.php/praxiseducativa/article/view/2504. Acesso em: 10 jun. 2026.