Mainly refers to the statistical information of students, including five parts:
1) Personal information. Such as name, gender, date of birth, native place, nationality, political outlook, school, grade, home address, hobbies and specialties.
2) physical condition. Such as blood type, general health status, physical development, physical defects, personal medical history, etc.
3) Learning and living conditions at school. For example, academic performance, ideological and moral character, sports performance, interpersonal relationship, being a class cadre, winning prizes, etc.
4) Family living environment. For example, information about major family members, whether they are only children, and family ranking. In addition, it is necessary to collect information about parents' parenting styles and attitudes, which can be based on EMBU.
5) Major social life events that have an impact on students' personal life. For example, family members died, parents divorced, tension with teachers and classmates, major setbacks and so on. This part can use the Adolescent Life Events Scale (ASLEC).