One of the interesting things about my job is that wealthy people ask me for ideas about how best to use their resources to improve America’s schools. There are plenty of important issues demanding attention: overhauling the sorry state of teacher preparation and teacher policy (I wrote an entire guidebook about that), giving low-income Americans more educational choice and improving educational finance are three obvious ones. But, to the consternation of colleagues in the education world, I don’t first suggest those or other specific education issues. Instead, I urge donors to support efforts to reform congressional redistricting. We won’t be able to genuinely improve our schools (or address a host of other issues) until we create legislative districts based on geography rather than gerrymandering.