Bricks and mortar are needed, but so are knowledge networks and institutional capacities, which rely on social, cultural and intellectual capital.

UNESCO: EDUCATION

Going out, a wide circle of acquaintances - cultural capital and social capital - are key factors in determining your social class, according to the survey.

BBC: Class calculator: A US view of the class system

Mr Gove argued that it was poorer families that had the most to gain as "the accumulation of cultural capital - the acquisition of knowledge - is the key to social mobility".

BBC: Gove sets out 'core knowledge' curriculum plans