Well-intentioned education reforms around the world are being undermined because of a lack of proper assessment and analysis of their impact on outcomes for pupils, according to a leading economic thinktank.

Research by the Organisation for Economic Cooperation and Development (OECD) has found that despite the global financial crisis, spending on education around the world has gone up, but there is considerable variation in how the money is spent and the outcomes it produces.

And in a separate report published on Monday, the OECD says that almost one in six 25-34-year-olds across OECD countries does not have the skills considered essential to function in today’s society, a situation which has not improved for more than a decade.