It is a "national scandal" that poorer pupils are lagging up to a year behind their richer classmates in their schooling, shadow education secretary Stephen Twigg is expected to warn later.
In a speech to the Association of Teachers and Lecturers (ATL) annual conference in Manchester, Mr Twigg will say: "In other words, being a poor pupil in a poor classroom is the equivalent of being left a year behind. This is a national scandal.
"I know there are inequalities in our health system, but if poorer patients were left to linger on waiting lists for an extra year there would be a huge outcry."
More top news
Passengers have been left stranded at Oxford station after someone forgot to unlock the entrance doors
Police say the occupants of the car managed to escape after the offenders pulled into a side road.
Continuing unsettled today with the best dry and bright weather across northern Scotland and Northern Ireland.