Extremism Fears Over Leading State School By Afua Hirsch, Social Affairs and Education Editor New revelations about the risks of extremism in schools have implicated one of London's most successful inner-city state schools. The Sir John Cass Foundation and Red Coat Church of England school in Tower Hamlets, East London, will now be placed in special measures by schools inspectorate OFSTED - the most serious finding it can reach. Criticisms of the school, which was previously given the highest rating of outstanding, centre on the activities of pupils' sixth form Islamic society. A Facebook page set up by the society allegedly contained links to hardline Islamist preachers. The society also set up its own YouTube channel, which was not monitored. Concerns were raised about the Islamic society's YouTube page The Facebook page appears to have been taken down, but in a video still visible on the society's YouTube channel, a preacher suggests Muslims should tell men who are "a bit feminine" to "be a real man." The preacher is not thought to have been addressing the Islamic society at the school. Video: Video On Student YouTube Page OFSTED warned that the school's failure to address concerns made pupils vulnerable to radicalisation and constituted a failure to safeguard the pupils. The school has also been criticised for allowing segregation between boys and girls in the playground. The Islamic society also raised money for a charity operating in Syria - one of five currently under statutory investigation by the Charity Commission. Human Aid is being investigated over its financial controls and management and whether trustees have complied with and fulfilled their duties and responsibilities under charity law. In a promotional video posted on the school's website, headteacher Haydn Evans says: "We believe that by providing a safe and secure environment, in which everyone feels valued and cared for, regardless of their faith, we can expect our students to become confident, high-attaining and independent learners." Video: Oct 9: Heads 'Not Aware' Of Dangers Mr Evans has been credited with transforming the school since he became head in 1995 and he was awarded a CBE for services to education in this year's New Year Honours list. The school was not available for comment, but Tower Hamlets Council told Sky News it did take its safeguarding duties seriously. The council's corporate director of education, social care and wellbeing Robert McCulloch-Graham said Mr Evans still had his support. He said: "We have every confidence in Haydn, the headteacher - he has a national and an international reputation and he was recently awarded a CBE in the New Year's Honours list. Video: School Promo: 'Safe And Secure' He's without reproach really. But yes, we do expect headteachers to know what's going on in schools, and in this case Haydn did know. The criticism is that the response to that has been perhaps a little bit slow. But we have to stress this is an isolated incident in an otherwise outstanding school which has had many years under Haydn's leadership of delivering excellent results for the children there. The OFSTED report, due out on Friday but leaked ahead of publication, is the first to fail a school outside Birmingham on a safeguarding issue relating to extremism. Earlier this year six schools in Birmingham were placed into special measures following the so called "Trojan Horse" incident, amid allegations teachers and governing members had been forced out and replaced with hardliners, and that the schools encouraged a socially conservative interpretation of Islam that left pupils vulnerable to radicalisation. Video: Headteacher Is 'Without Reproach' Last month, OFSTED head Sir Michael Wilshaw told Sky News the Trojan Horse affair had "focused minds" on the dangers of radicalisation at the schools inspector. He said: "It taught us that headteachers were not as aware as they should be about radicalisation."