Nine year long primary education: a study on state school headteachers’ perceptions. Práxis Educativa, [S. l.], v. 4, n. 2, p. 149–157, 2009. DOI: 10.5212/PraxEduc.v.4i2.149157. Disponível em: https://revistas.uepg.br/index.php/praxiseducativa/article/view/712. Acesso em: 21 may. 2026.