How to divide classes in Changchun No.29 Middle School and High School?

Randomly divide classes according to levels. High school is made up of students of different levels in the whole school. The level of students in these classes is relatively fair, and each class is composed of top students, middle students and students with relatively poor academic performance. In ordinary classes, students with poor learning can be driven by top students through some special educational methods, so that every student can get a good development. In senior high school, in addition to teachers' normal teaching, teachers will also improve their academic performance through cooperation among students.