This research explores the mediating role of sleep quality in the relationship between social media usage and student engagement among senior high school students within the Division of Davao del Norte. Existing studies suggest that excessive social media use is associated with diminished sleep quality and reduced academic engagement. This study contributes by providing empirical evidence on the relationship between social media usage, sleep quality, and student engagement within a specific local context. Furthermore, this research can serve as a valuable reference for educators and policymakers in understanding and addressing the challenges posed by social media on student well-being and academic performance. The study employs a quantitative research design, utilizing descriptive and correlational methods to analyze the relationships between variables. The data was analyzed using statistical tools such as average weighted mean, standard deviation, Pearson r, regression analysis, and the Sobel test. The collected data will be analyzed to determine the extent of social media usage, the level of sleep quality, and the level of student engagement among the participants. The study will examine the relationships between these variables and assess the mediating effect of sleep quality on the relationship between social media usage and student engagement. The findings will be significant for students, teachers, parents, schools, and DepEd officials, emphasizing the need for strategies to improve social media usage and student engagement, as well as the importance of sleep quality in achieving quality education.