I don't have references on hand, but I've seen a study that showed girls are much more vocal and active in a classroom (specifically science/technology related)

I don't have references on hand, but I've seen a study that showed girls are much more vocal and active in a classroom (specifically science/technology related) when its an all-girls setting. That in itself is a good reason to create introductory environments where girls can engage in the material without whatever social pressures keep them from doing so otherwise. As far as "black" goes, that's probably a function of the fact that its in brooklyn and to ensure that black girls realize this is for them.