I live in a suburban district that had enrolment growth they were unprepared for. They ended up building a new school to deal with it. A couple of our elementary schools were routinely at capacity, so students enrolling after a certain date in addresses zoned to those schools were more likely to be bussed to another school in the district. If you move to an area where none of the schools are at capacity and you aren’t applying for a charter school then it is unlikely you will run into any problems.