Government's primary responsibility

During the grammar schools row - now in recess - The Spectator argued that policy-makers should focus more aggressively upon primary education if social mobility was to have a chance. This alarming report in today's Guardian shows how urgent the task is. By three, the class divide has already translated into educational attainment, as the kids from better off backgrounds surge ahead. Common sense? Sure. But since when did common sense dictate Government policy?