Using HLM to Determine a STEM Programs Impact on Middle School Academic Achievement. International Journal of Research in Education and Science, [S. l.], v. 8, n. 1, p. 1–17, 2022. DOI: 10.46328/ijres.2607. Disponível em: https://ijres.net/index.php/ijres/article/view/1136. Acesso em: 28 jun. 2025.