'We're actually very good here in Australia with kids who start below average. But that's often not recognised because there's more money in arguing that we're doing a bad job.'  Professor John Hattie and I talk about school improvement and the issue of putting experience before expertise when it comes to promotion and jobs.  He believes we will struggle to get people to join the education profession if we don't change this. John says he's not provocative. You be the judge....