Nick Clegg: 'Quality of teachers is important factor'

A study suggests that where children grow up in England has an increasing impact on how well they do at school.

The Social Market Foundation examined test results and found that regional differences have become much greater.

Pupils' results are highest in London and lowest in Yorkshire and Humber.

The former leader of the Liberal Democrats, Nick Clegg, is chairing a commission on inequalities in education and said part of the problem was attracting and retaining good quality teachers.