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Second, the advantage of controlling the class size to 15 people2. Cultivate all-round talentsWhen the class size is controlled at 15 students, teachers can know more about each student's learning situation. Teachers can provide targeted counseling for each student's weak points of knowledge. For example, in mathematics teaching, teachers may only explain the knowledge points in a large class, but in a class of 15 students, teachers can find each student's problems in algebra, geometry and other different sectors, so as to explain the problem-solving ideas in a personalized way.

1. Challenges and countermeasures of educational resourcesIn terms of educational concept, teachers also need to adapt to this change from large class teaching to small class teaching. Teacher training is particularly important. Schools can organize teachers to participate in training courses in small class teaching and learn the methods and skills of small class teaching, such as how to carry out personalized teaching and how to organize efficient group activities, so as to improve teachers' teaching ability to adapt to the new teaching mode.Schools can also relieve pressure by integrating resources. For example, make rational use of idle space on campus and transform it into classrooms, and share some educational resources through cooperation with the community. At the same time, improve the utilization rate of educational resources, such as using digital teaching equipment to reduce dependence on traditional teaching resources.

In Europe, countries such as Finland, which are famous for their high-quality education, also implement small class teaching. Finnish schools pay attention to the individualized growth of each student, and the class size is not large, so teachers have more time and energy to tap the potential of students. Teachers can tailor their study plans for students according to their hobbies and specialties. In this educational environment, Finnish students have performed well in programme for international student assessment and other tests, and their innovative ability and comprehensive quality have been widely recognized by the international community.I. Successful experiences of Europe, America, Japan and South KoreaIn terms of educational concept, teachers also need to adapt to this change from large class teaching to small class teaching. Teacher training is particularly important. Schools can organize teachers to participate in training courses in small class teaching and learn the methods and skills of small class teaching, such as how to carry out personalized teaching and how to organize efficient group activities, so as to improve teachers' teaching ability to adapt to the new teaching mode.