Nicky Morgan, the Education Secretary, was speaking as schools in England and Wales were issued with a guide to identifying pupils in danger of radicalisation. She said attacking core British values or being extremely intolerant of homosexuality were examples of behaviour that could raise the alarm. The NUT said the guidance would cause teachers ‘nervousness and confusion’. The advice is designed to enable teachers to identify pupils who may have come under the influence of extremist organisations or being ‘groomed" by extremists. Teachers would then be expected to alert senior staff, social services and the police. The move has not been prompted by the massacre in Tunisia but follows David Cameron's call for people to become ‘intolerant of intolerance.’ Ms Morgan told BBC Radio 4's Today programme, ‘Radicalisation or the risk of children being drawn into non-violent extremism is a very real threat in this country.’