Student number is a number assigned to each student by the school for the convenience of student management. In my own school (university), generally everyone's student number will not be repeated. Different schools number students according to different standards, which generally includes information such as year and class. For example, some schools have year+class+number, such as 20050603, which means that the student entered school in 2005, and the number is Class 6 No.3. Some schools also contain information about colleges or majors, such as 23050602, where 23 represents the number of a major or college, 05 represents 2005, 06 represents 6 classes, and 02 represents the number of classes. The student number is just a number, which is only useful in your school. Other schools use odd numbers and even numbers to distinguish between men and women in the penultimate position of student numbers. Even numbers represent women and odd numbers represent men, which makes it easy to distinguish a person's gender.