Ofsted has a new, hard-line chief inspector and a new, tougher inspection regime - and in the past few months that has led to a spike in the number of schools deemed inadequate. Predictably, there has been a corresponding wave of anger in schools - with a growing number taking to the courts to challenge the inspectors' views? So are the inspectors really up to the job? And who inspects the inspectors? Fran Abrams investigates. Producer: Rob Cave.