The folks also call it adjustment and diversion-it refers to the arrangement of the last batch of students (even those with household registration) according to the admission batch if it has exceeded the school's enrollment plan. That is to say, in a district, county or city school, which one is specific is generally arranged according to the principle of proximity and the actual situation. Overall planning is just to ensure that there are schools. As for which school and how, I'm not sure.
Thanks to the group-run schools in some places, some schools that are out of the chart will be transferred within the group.
There is a certain "uncertainty" in the overall enrollment. For example, some families have a good school at their doorstep, but for various reasons, their children have transferred to another primary school as a whole. Although it is also arranged nearby, I am not sure which school it is and how it is.