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2. The change of social concept and educational concept(All text materials are automatically generated by ai intelligence)Drawing 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.

1. European and American casesThird, the implementation challenges and coping strategies1. Challenges and countermeasures of educational resources

(All text materials are automatically generated by ai intelligence)Drawing 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.