Legal analysis: the registered permanent residence is in my hometown, and I will go back to the police station where my family is located. The registered permanent residence is at school. Please check with the local police station. Neither of them has registered permanent residence, and they may have moved out of their hometown, but they have not settled in the school. In this case, ask the hometown police station how to deal with it. It's not difficult to handle, just go through the usual procedures. Hukou is a general term for hukou and population, with households as households and people as population. It is a legal document made by the household administration department of the public security organ to record and retain the basic information of the registered population.
Legal basis: Article 3 of the Law of the People's Republic of China on Resident Identity Cards includes: name, gender, nationality, date of birth, location of permanent residence, citizenship number, personal photo, fingerprint information, validity period of certificate and issuing authority. Citizenship number is a unique and life-long identity code for every citizen, which is compiled by public security organs according to the national standard of citizenship number. Citizens applying for obtaining, renewing or replacing resident identity cards shall register their fingerprint information.