High proportions of grammar school pupils come from the independent primary school sector, roughly double the rate you would expect. (suttontrust.com)
For example, grammar school pupils tend to outperform pupils of similar ability at other types of schools where the ability range is more mixed. (schoolsweek.co.uk)
Mr Brady is far from alone in his party in questioning the move away from academic selection, with the former grammar school pupil calling for an increase in grammar schools in inner cities. (politics.co.uk)