Here's a relevant quote from this study: "Schools with mostly zoned students generally reflect neighborhood segregation patterns. Those with the means to attend less disadvantaged schools are also often the more advantaged students or families, which increases the segregation within CSDs and the city." There is so much that would be possible to study around these issues. What a rich multi-disciplinary (history, law, politics, statistics, English) project this could be! Here's another interesting source that is distracting me from Hannah-Jones's essay: http://editorial-ny.dnainfo.com/interactives/2014/12/diversity/diversity-frame.html Try this: go to any neighborhood, and start with All Schools, then go to Middle Schools, then High Schools. Notice the green dots (schools with Whites) disappearing? Of course in Bedford-Stuyvesant, where Hannah-Jones lives, this stays the same across the different ages -- only Black-dominant schools are available.