Colin Hart, director of charity the Christian Institute, claims both Ofsted and the Department for Education failed to give enough attention to the alleged abuse – discovered as part of the ‘Trojan Horse’ probe into a group of Birmingham schools.
He said the bullying includes anti-Christian chanting in assemblies and teachers labelling Christian children ‘liars’.
Referencing recent reports from Ofsted on the schools Mr Hart said were involved, he claimed none of the bullying was noted.
In a letter to the Education Secretary Nicky Morgan, seen by the Daily Telegraph, Mr Hart said: “Ofsted’s system for detecting intolerance is clearly inadequate if it is not picking up on anti-Christian sentiment.
“In fact, Ofsted may be part of the problem.”