Malcom Gladwell covers this in Outliers. There is something that can be done, but it has to be done starting in pre-school and continuing through second grade. And that "something" is that you don't get a summer. You learn year round for those first few years. The reason why some kids excel and some don't is almost entirely because they don't get continuing education at home. And past 2nd grade, it's almost irreparable.
We can fix it. But we have to retool primary education significantly. And "retooling education" isn't something that is ever going to happen in the current setup.