I investigate three goals of school choice: student welfare, encouraging neighborhood schools, and diversity. I develop …,513) to a school one rank higher in their preference lists. My analysis also shows that one can simultaneously improve welfare … neighborhood school by 50\% without reducing welfare or diversity. I close by discussing menus-and-reserves mechanisms that …

This paper presents a tractable framework for studying frictionless matching in school, work, and marriage when … communicate and coordinate at lower resource cost. The theory delivers full task specialization in the labor and education markets …