Isnaningsih, T. and Hanna Firlyana 2026. THE The Correlation Between Sleep Quality and Stress Levels with Learning Achievement in Adolescents at Mts Saintek Nurul Qur’an Hdwr in 2026. Indonesian Journal of Contemporary Multidisciplinary Research. 5, 3 (Jun. 2026), 465–474. DOI:https://doi.org/10.55927/modern.v5i3.40.