In recent ten years, the experiment of "small class education" has been concerned by educators in China. Small class education originated in America in 1970s. Relevant data show that the average number of primary school classes in developed countries is: 24 in the United States, 20 in Canada, 30 in Japan, 23 in Germany, 23 in France and 25 in the Netherlands. It can be seen that small-class education is a teaching model highly praised by developed countries. A researcher at the Education Examination Service Center, the world's largest independent testing institution, found that small-class education really helps to improve students' academic performance.

With the transformation of China's basic education from quantity expansion to quality improvement, small class education has become a new educational development trend. With the implementation of China's population policy, China's population birth rate has been greatly reduced, and the enrollment rate of primary school freshmen has also entered a low level. Objectively speaking, in order to match the quality of primary education with the rapid economic development, China should also implement small class education from now on. Because this educational management model is not only conducive to giving full play to the advantages of class teaching, but also taking into account the individual personality development of students, so that students have more equal opportunities for education, thus greatly improving the quality of education and teaching. At the same time, the class size is reduced, which is beneficial to teachers' effective class management. Compared with adults, primary school students have weak self-control and strong curiosity. Classroom discipline has always been a headache for teachers. The number of students decreases, and the frequency of teachers' management discipline decreases. Setting aside enough time can strengthen the interactive teaching between teachers and students.

In addition, it is also conducive to the improvement of students' moral education level. The reduction of the number of students is convenient for teachers to keep abreast of students' changes, prevent delays and nip in the bud. Most importantly, this will help teachers to spare more time and care for students who have difficulties in study and life, so that these students can regain their confidence and gain favorable development. Small-class education reduces the amount of teachers' homework correction and the total number of home visits, so that teachers have more time to carry out teaching and research activities, and also increases the two-way interaction between teachers and students, enhances teachers' understanding, improves the relationship between teachers and students, and makes it easier for teachers to teach with positive emotions, thus ensuring the improvement of teaching quality.