Maybe they can bring their resources with them too, and the poor schools can have things like lead paint remediation, honors classes, and extra curricular activities.
Resources are mainly property taxes. Unless they're building a new house whose value is significantly greater than the median for the area, families gaming the system aren't likely to have much of a lasting impact on the district.
Yeah you’re right. However, resource gaps can be filled by things like volunteer librarians, teacher wishlists/donations, field trips, strong PTAs, etc..
This is common in my city. It’s a big underfunded school district with a handful of coveted, well supported schools. I’m assuming it happens elsewhere in America with the success of platforms like donors choose.
Or it could end up like some Asian countries with a large afterschool tuition industry. I guess at a minimum you don't want the kid to get shot up at school though.