In the sixth grade. Because the junior middle school is the finale every year, compared with other schools, it can choose the best students in the city by itself. Therefore, every child who enters a foreign school is basically a noble family, either rich or expensive, and is an excellent child in key primary schools in various districts, such as the Yucai Department, the Experimental Department, and the foreign school. These primary schools are all key schools supported by the government, with better teachers and teaching conditions than ordinary schools, and parents' cultural quality, income level and academic qualifications are also better than ordinary schools.