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2. Japan and South Korea casesDrawing lessons from Europe, America, Japan and South Korea: Controlling the class size of primary and secondary schools and universities to 15 students to improve the quality of teaching and training.

Second, the advantage of controlling the class size to 15 people1. Challenges and countermeasures of educational resources

In the process of educational reform, Korean schools are gradually developing into small classes. South Korea's education pays attention to cultivating students' comprehensive quality. In a class of 15 students, teachers can better organize diversified teaching activities. For example, group project-based learning is carried out, so that each student can give full play to his own advantages in the project and cultivate teamwork spirit and the ability to solve practical problems. At the same time, the Korean education department found that small-class teaching helps to reduce the academic pressure gap between students and promote educational equity.2. Japan and South Korea cases2. The change of social concept and educational concept