Theresa May is using grammar schools to encourage UKIP members to defect to the Tories, as it was a UKIP policy to put a grammar school in every town, says the Campaign for State Education.
Press officer Michael Pyke made the comments, after education secretary Justine Greening said a new wave of grammar schools should be created to target children from ordinary working families.
Pyke told James Max that the Conservatives have no idea whether voters want grammar schools, but James argued that putting mixed ability students together results in everyone progressing at the level of the lowest student.
The press officer hit back and said James was making up evidence, he then claimed that half of the students who attend Oxford and Cambridge University come from comprehensive schools.
But James believes that is just a result of positive discrimination.
Listen to the full interview above