Scores of teachers and support workers linked to the Trojan Horse scandal could be banned from working in schools for life, it has been claimed.
Current and former school staff could face the disciplinary action after being investigated by the professional watchdog, the National College for Teaching and Leadership.
The NCTL is said to be looking at those allegedly involved in the infiltration of Birmingham schools by Islamic hardliners.
Up to 30 individuals are said to be under investigation, but the activities of another 70 could also be looked at.
Claims being examined by the NCTL include that an al Qaeda-style video was copied at Park View Academy, one of the schools at the centre of the Trojan Horse controversy.
Dozens of staff members in Birmingham schools allegedly exchanged messages on social media service WhatsApp, including homophobic remarks and offensive comments about British soldiers. Professional hearings are reportedly due to begin next month.
It is understood the NCTL obtained files about staff from the Department for Education (DfE) as part of its inquiries. They reportedly include information from the Trojan Horse investigation by Peter Clarke, the former Scotland Yard counter-terrorism chief.
His report found there had been "co-ordinated, deliberate and sustained action" by a number of people to introduce an 'intolerant and aggressive Islamic ethos' into some schools in Birmingham.
Five schools, three of them academies belonging to Park View Educational Trust, were put in special measures after five inquiries into the Trojan Horse scandal.
The Birmingham Post told in December how six members of staff at Park View Educational Trust had been suspended over allegations of misconduct.
The entire governing board of the trust, which runs Park View School, Golden Hillock and Nansen Primary, had resigned last year following damning reports into Trojan Horse by Ofsted, the city council and Mr Clarke.
The six suspensions had followed the suspension of Monzoor Hussain, then Park View School acting principal, and Nansen deputy head Razwan Faraz last July.
The teachers were both reportedly part of the WhatsApp group which suggested the killing of drummer Lee Rigby and the bombing of the Boston Marathon were faked.
Mr Hussain and Mr Faraz - a former teacher at Park View School - were said to have been two of the "most prolific" contributors to the group called the Park View Brotherhood, according to the Clarke report.