NCLB Progressivity?

Over at the Quick and the Ed, Kevin Carey makes an unexpected point in President Bush's Secret $5 Billion Anti-Poverty Program

And while President Bush, to his discredit, vetoed the recent education and labor appropriations bill that would have provided the first major increase in Title I funding since 2003, both his proposed budget, that bill, and all the other funding proposals from Democrats and Republicans alike have stuck to principle of focusing new federal education resources on the districts with the most poor students. If you believe school funding levels matter, this has made a significant difference in the lives of the most disadvantaged children. In a time when such consensus is hard to come by, this deserves more attention.

Has NCLB really established a new progressivity to federal education spending? Will that unexpected budgetary resolve continue?