For example, there are 10 classes in the first grade of a school. The school divides the first grade male students into 1 class, and the tenth male students into1class. The eleventh boy was assigned to 10 class, and the twentieth boy was assigned to 10 class. At the same time, the top female students were assigned to 10 class, the tenth to 1 class, the eleventh to 1 class, and the twentieth to1class.
Serpentine placement, also known as "snake queue", can ensure the balance of students' grades and the reasonable collocation of boys and girls, and also put an end to some phenomena of pulling relationships and entering the back door. After the students' classes are arranged, the class teacher and the subject teacher are reasonably and evenly matched in advance by the school according to the teacher's ability and teaching experience, and the class teacher decides which class to teach.
Serpentine placement is a way to achieve teaching balance in schools, and strive for similar starting points for each class.