Verdugo Guamán, M., Cabrera Ortiz, F., Cabrera Tenecela, H. and Reyes Guaranda, M. 2026. Improving Academic Performance in the Lowest Quartile: A Multilevel Analysis of a Remedial Intervention in Ecuadorian Public Schools. Journal of Curriculum Studies Research. 8, 2 (Sep. 2026), 290-317. DOI:https://doi.org/10.46303/jcsr.2026.34.