How to divide abc class in Wuhu No.1 Middle School?

Division of abc class in Wuhu No.1 Middle School;

Class A refers to the science experimental class, which is divided into two classes, 24 and 23, with independent enrollment and the top 50 scores in the senior high school entrance examination.

Class b+ is working overtime, and there is only one class in 22 classes. There are also students who have not been admitted but have high grades.

Class B has two classes: 2 1 and 20.

Class C has two classes, 19 and 18.

The students in the four classes of bc are basically in the top 500 in the city.