Prioritizing the desires of the most powerful stakeholders will never make for a progressive argument.
I am tired of hearing about FAMILIES FLEEING THE PUBLIC SCHOOLS and how we need to get them back. Even if those WEALTHY WHITE FAMILIES FLEEING THE DIRTY PUBLIC SCHOOLS came back to those schools, they have no history of advocating for any group other than themselves.
Aaaaaaaaaand they do that enough already.
The progressive argument is for building strong and well-funded schools serving the families already there. The progressive argument does not fantasize about how meeting poor children will be good for rich ones. The poor are not there for your edification. The progressive argument agrees that diversity is an important social value for all, but doesn't put the onus on achieving it on the oppressed.
Oh, and the progressive argument definitely doesn't fail to notice the block-by-block segregation that characterizes our city. The neighborhood school proposal ensures that those WEALTHY WHITE FAMILIES will attend school with their fellow pale moneyed.
In closing: if there is a progressive argument for neighborhood schools, BeyondChron didn't make it. They do provide an excellent example of San Francisco progressive politics at their worst: willfully blind to privilege.