Investigating Trends in Academic Achievement: A Longitudinal Analysis of Grade Fluctuations among Students. The Critical Review of Social Sciences Studies, [S. l.], v. 2, n. 2, p. 783–798, 2024. DOI: 10.59075/xwyj4v44. Disponível em: https://thecrsss.com/index.php/Journal/article/view/71.. Acesso em: 4 sep. 2026.