Westminster Hall debate  27 March 2012, 16-to-18 Mathematics Education. [Hansard source (Citation: HC Deb, 27 March 2012, c334WH)]

As reported in The Guardian:

Social mobility being hampered by lack of maths teachers, says Tory MP

Liz Truss says comprehensive pupils are only half as likely as privately educated children to study maths.

Pupils educated at comprehensive schools are half as likely to study mathematics as their counterparts in the private sector, creating a “massive problem” with social mobility, a Tory MP has warned.