That all sounds great in theory but in practice it devolves not into only giving extra help to those in need, but also to _take away_ from those perceived to have some sort of advantage. See for example NYC's idiotic plan to close gifted and talended kindergarten programs in public schools.

The truth is that it is a hell of a lot easier to lower the bar for everyone than to raise it. I.e. it's a lot easier to make dumb kids than to make smart ones, so in the name of equity we shall have dumber ones.