The transition from online classes to blended learning has resulted in a common occurrence of sleep deprivation among Senior High School (SHS) students. This study aims to investigate the potential relationship between students' sleeping hours and their academic performance and classroom participation at NU-Nazareth. The researchers opted for a descriptive-correlational research design, using a multi-stage sampling technique to select participants for the study. The study was conducted at NU-Nazareth School during the academic year 2022-2023. The data collected revealed that, on average, students had only 6 hours of sleep. Surprisingly, the study's findings indicated no significant relationship between sleep hours and academic performance, nor between sleep hours and classroom participation. Therefore, based on the data, it can be concluded that a student's academic performance and classroom engagement are not significantly influenced by their sleep duration. The results suggest that factors other than sleep play a more substantial role in influencing students' academic performance and participation levels. These factors could include motivation, interest in the subject matter, teaching methods, classroom environment, and individual learning styles, which may have a greater impact on how students perform and participate in class. Further exploration of these factors could provide valuable insights into enhancing students' overall learning experiences.