Video: Ofsted chief calls for behaviour change in schools Children from similar backgrounds with similar abilities, but who happen to be born in different regions and attend different schools and colleges, can end up with widely different prospects because of the variable quality of their education. In his second annual report, Sir Michael also announced that for the first time, schools with behaviour problems will face unannounced inspections in a bid to crack down on disruption in the classroom. England's schools are suffering from a culture of "casual acceptance" of misbehaviour and lessons should not be undermined by "background chatter, inattention and horseplay," he suggested. Speaking during a visit to St Paul's Way Trust School in Tower Hamlets, east London, Sir Michael said: "We need to talk a lot more about the culture in our schools and the expectations we should have of our children. Too many of our schools suffer from poor behaviour and high levels of disruptive behaviour. The chief inspector today said that classrooms need to be orderly places. Around 700,000 pupils attend schools where behaviour needs to improve. Unless this changes, teachers will struggle to create an environment in which all children learn well.