1 Chapter 1 INTRODUCTION This chapter presents the rationale of the study, theoretical/conceptual framework, problem/purpose statement, significance of the study, scope and limitations, and definition of terms. Rationale of the Study This study aims to know and investigate the impact and correlation between the class schedules and the comprehension level towards the students. Students internationally and nationally, especially Senior High School students, have experienced the difficulty of choosing the right class schedule for their selves that results to lower comprehension or understanding of the topic. Though, students chose the schedule they desire, their ability to learn is greatly affected. According to the study conducted by Shapiro and Williams (2015), the way school schedules are currently organized is hindering student performance and that an intervention as inexpensive and simple rescheduling of classes can have a meaningful impact on students. Their study also concluded that students who are in the 10 th grade in morning class, when it comes to scores in intelligence test, are significantly higher than those who are in the afternoon class. In the 2015 study of St. Lawrence, they stated that majority of the students abroad agreed that it is better to attend morning classes because after the class, they would not have to worry about anything. After class, they can just relax, study or go somewhere to have some fun with their friends. They also agreed that students are fresher in the morning than in the afternoon.