Dutra NLL. GRADE PROMOTION AND LEARNING IN CRISTALÂNDIA DO PIAUÍ: CONTRADICTIONS IN STUDENT FLOW AND EXTERNAL ASSESSMENTS. EDUCERE [Internet]. 2026 Nov. 10 [cited 2026 Nov. 11];27(1):129-55. Available from: https://revistas.unipar.br/index.php/educere/article/view/12975