Clive Ireson, chairman of the Association of Christian Teachers, claims there is nothing in the report that wasn't already known to the authorities.
Speaking on Premier's News Hour, he said: "The report doesn't tell us anything new. It just says that people are chatting and talking and calling out. and I think we all remember our school days that children chose what lessons to do that in, didn't they?"
The education watchdog says bad behaviour in the classroom is costing school pupils in England up to an hour of learning time a day.
Ofsted wants problems such as chatting and using mobile phones in lessons stamped out, claiming some heads aren't doing enough to tackle it.
Clive Ireson of the Association of Christian Teachers reports: