The school lottery means that the number of applicants in the school exceeds the number that the school can accommodate. At this time, the school or local education department can only choose the admission list by drawing lots. The lottery is generally randomly selected by computer, regardless of grades, and each student's opportunity is equal in theory.

After all primary schools organize schools to fill in their volunteers, if there is a junior high school with more applicants than students, the number of students enrolled will be determined by computer random allocation (computer lottery). The specific operation is that the primary school puts forward a computer allocation work plan for Xiaoshengchu, which is approved by the District Education and Sports Bureau. After approval, the primary school will determine the time and place for drawing lots.