Mark Lehain, 41 Conservative prospective parliamentary candidate (PPC) for Newcastle-upon-Tyne North (Labour majority 10,349) “It’s not been easy being a Tory in education over the last few years,” says Lehain, a former maths teacher, with a sigh. A torchbearer for the Conservatives’ academy and free school policy, he founded and led one of the first free secondary schools – the Bedford free school – then left to head up PTE, the Parents and Teachers for Excellence group, which campaigns for…