Shocking footage of children apparently being hit by their teachers during lessons on the Koran will also be aired on Channel 4's Dispatches programme on Monday.
A hidden camera installed by a reporter at a school in Birmingham recorded a preacher telling pupils "the disbelievers are the worst creatures, they are the worst creatures".
The 11-year-olds are then told not to trust more liberal Muslims.
Their teacher said: "The person who's got less than a fistful of beard, then you should stay away from him the same way you should stay away from a serpent or a snake."
"The Hindus do, they drink piss, I've told you this.
"Do they have any intellect? No."
Filming intermittently over a period of four months, the camera recorded children being taught a hardline, intolerant and highly anti-social version of Islam.
During the same period our reporter also attended the Markazi Jamia mosque in Keighley, West Yorkshire, after hearing of serious allegations that children were being hit at its madrassa.
Madrassas in the UK are part-time after-school or weekend classes, often held in mosques, where children are taught to read the Koran. In Keighley it is not what they are being taught that is the problem, but how.
Again, Osman went into the mosque and left the camera in the room where classes took place.
The film shows children as young as six sitting on the floor of a large room in the mosque, one of the biggest in the country. The boys are hunched over wooden benches, rocking backwards and forwards as they rote-learn the Koran in Arabic. A man with a long white beard dressed in a traditional shalwar kameez – tunic and trousers – sits at the head of the class.
Periodically he gets up and walks behind the boys. As he passes, the children appear to cower and watch him nervously. It soon becomes clear why.
He unexpectedly raises his hand and slaps a young boy hard on the head. Moments later he strikes another. And then he kicks a third child.
In just two days of filming in December 2010, the camera recorded the teacher hitting children as young as six or seven at least ten times, in less than three hours of lessons.
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