In one Muslim school he investigated for his documentary none of the pupils believed in evolution.
He said: "Their first recourse was not 'What's the evidence?' but 'What does the Koran say?'"
While Dawkins' remark gets the media's attention, the story behind the story is the rise of faith-based schools in the UK. It started under Labour, but it's continuing and may in fact increase under the new Conservative-Lib Dem government.