The issue of poor behaviour in schools has not been taken seriously enough, says a review by England’s behaviour tsar Tom Bennett.
The extent of the problem has been underestimated in official data kept by Ofsted, he warns.
Schools with particular problems should be funded to provide internal units to deal with troubled pupils, he says.
Ofsted said effective behaviour management was essential for pupils’ learning, development and wellbeing.
Mr Bennet told the BBC: “Behaviour has not been taken seriously enough in the past, and the official data underestimates the extent of the problem in all schools.”
He said he wanted behaviour to be tracked at the school level and pulled together in an anonymised survey.
In his report, Creating a Culture: How school leaders can optimise behaviour, Mr Bennett said there was sufficient evidence that there was enough of a problem nationally with behaviour for it to be a concern.
Even though, he said, that in any school, at most times, behaviour was largely civil and co-operative.
Mr Bennett said strong leadership was key to ensuring better behaviour, and called for head teachers to be offered training in how to devise all-encompassing behaviour policies.
He also suggested head teachers be subject to a new certification process that required them to show they had an understanding of behaviour management.
“Teachers alone, no matter how skilled, cannot intervene with the same impact as a school leader can,” he said.
Instead, a culture of good behaviour must be well-established and universally known, Mr Bennett said.
These should include clear rules, consequences, sanctions and rewards, as well as expectations for behaviour in different parts of the school.
Mr Bennett also called for the Department for Education to direct funds to schools with particular behaviour challenges to fund the creation of internal inclusion units.
These would offer targeted specialist intervention and help pupils reintegrate back into the mainstream school community when the pupil was ready, he said.
The Department for Education, which commissioned the report, would not comment.
Ofsted said: “We will discuss with the Department for Education matters identified for government which are relevant to Ofsted and consider in detail the recommendations for inspection.
“Whilst no immediate changes are proposed to the current school inspection arrangements, any actions in response to the recommendations will be considered as part of our future plans.”