The tax increases on private schools, though long trailed, were among the most emotive measures in last week’s blockbuster budget, because they’re widely seen to be as much a moral issue as a question of politics or economics. It was a former Conservative education secretary, Michael Gove, who asked: why should the state support the already wealthy to buy advantage for their children? Others see it as an attack on aspiration and excellence, ”a vindictive piece of class warfare on parents who scrimp and save to pay fees”, according to Mr Gove’s former colleague David Davies.