A lot of studies have been carried out to determine the advantages and disadvantages of having a smaller class over a larger one. Researchers have tried to draw a correlation between the number of students in a classroom and the student’s academic performance, relationships, teacher morale, and teaching style. The findings from these research works have clearly indicated that there is some form of relationship between the number of students and the overall teaching experience in a classroom. The findings of these studies are based on empirical studies. This literature review will focus on the importance of a small class, the connection between class size and student-teacher relationship, student performance, and teaching style.