What will happen if people continue to vacate urban areas as major metro districts remain stuck in their current messes. School choice is rapidly becoming a lif

What will happen if people continue to vacate urban areas as major metro districts remain stuck in their current messes. School choice is rapidly becoming a life and death matter for cities as school districts continue to flounder. My city, Memphis, Tennessee is currently in danger of a death spiral, largely due to collapse of its school system. Why continue to mandate a failing system, when many private options are both accessible and successful? Why prevent or restrict, lower middle income students from going to higher quality schools?