The League of Education Voters recently published a page of resources for understanding the McCleary decision and how it impacts school funding. It’s a reasonable collection of items.
In addition, I would recommend that you look at some of the posts I’ve done over the past few years on school funding and the Supreme Court. There are a number of candidates this year that are arguing that the court has overstepped its boundaries – getting “too big for it’s britches” might be a way of saying it in the vernacular. I totally disagree, and my argument is here.
My discussion of how the remaining part of the problem should be solved is on the front page of my website, or you can find it here.