Registered as a collective household in the school and registered as "people are not at home", the census forms filled in are all the same, but the abbreviations of the census forms are R6 and R7, and the options are different. This is not a duplicate registration, but a reflection of mobile migration. If you can't apply for a temporary residence permit, you must ask the student affairs office of the school. I'm only engaged in census work, and I don't know anything about the school.
Extended data:
National Population Census: The state will formulate unified time nodes, unified methods, items and questionnaires, conduct a comprehensive survey and registration of the existing population in the country in strict accordance with the instructions, and collect and analyze data. The focus of the census is to understand the population development and gender ratio in various places. The national census is a nationwide survey.
It is the most basic scientific method to collect population data widely used in the world today, and it is the main source to provide basic population data for the whole country.
References:
Baidu Encyclopedia-The Sixth National Population Census