The school at the centre of the row over alleged Muslim extremism in Birmingham has been criticised in an official report.
ITV News understands that an Ofsted investigation of Park View School found children were not protected from extremist views and that leadership was weak.
Prime Minister David Cameron has defended the government's handling of the affair, adding that he would be stepping in to "sort out" a dispute between the Home Secretary Theresa May and Education Secretary Michael Gove.
ITV News correspondent Rupert Evelyn reports:
ITV News understands that two Birmingham schools run by the same educational trust have been criticised by Ofsted for apparently failing to protect pupils from the risks of extremism.
Golden Hillock School and Park View Academy have both now been rated "inadequate" and placed into special measures.
The two schools are both run by Park View Educational Trust, which also manages a primary school.
A copy of the Ofsted report into Golden Hillock says "too little is done to keep students safe from the risks associated with extremist views".
ITV News understands that the report into Park View Academy (PVA) contains similar criticisms and that its acting principal, Monzoor Hussain, has now stepped down as acting headteacher.
It is also claimed staff at PVA have expressed concerns about both the governors and the leadership team and that they do not have faith in them.
Asked for a response to the claims, Park View Academy refused to comment.
One of the Birmingham schools at the centre of the 'Trojan Horse' investigation has issued a response to a critical Ofsted report, pointing out that the regulator makes no suggestion it tolerates extremism of any kind.
A statement from Park View Educational Trust, which runs Golden Hillock School, says: "Ofsted judges that Golden Hillock is not doing enough to raise students’ awareness of the ‘risks of extremism’.
However, it is crucial to note that the Ofsted reports make absolutely no suggestion, nor
did they find any evidence, that Golden Hillock either promotes or tolerates extremism or
ITV News has seen an Ofsted report that strongly criticises the governance of one of the Academy schools at the centre of the 'Trojan Horse' investigation into possible links with hard-line Islamists.
The says measures to keep students safe are "inadequate", while the school's equalities policy was deemed "not fit for purpose".
The regulator also warns that "leaders and governors are not doing enough to mitigate against cultural isolation", while female staff complained about feeling "intimidated" by male colleagues,
Some of the key points raised in the report:
These concerns, along with several problems with the teaching and curriculum, have led to the school being placed in 'special measures' by the regulator,
This means the school has to follow an action plan to improve its performance or risks being closed down.
Education Secretary Michael Gove has denied being at war with Theresa May, saying the Home Secretary is doing a "fantastic job".
Asked if she was too soft on Islamic fundamentalism, Mr Gove told reporters: "No absolutely not, she's doing a very fine job."
One school was praised by Ofsted for using money from the pupil premium to pay for a number of cultural trips to Saudi Arabia.Read the full story ›
The Prime Minister has stepped in after an exchange between ministers over the handling of alleged Islamist extremism in Birmingham schools.
A Downing Street source said David Cameron was "keen to establish the facts" after Theresa May wrote to Michael Gove questioning why his department had not acted on warnings of a supposed plot by Islamist extremists.
May's letter inquired about evidence that the Department for Education knew of the 'Trojan Horse' allegations in 2010 and asked: "If so, why did nobody act?"
As the letter emerged the pair took the unusual step of issuing a joint statement insisting they were "working together" on the issue.
Six Birmingham schools will be rated 'inadequate' and several more downgraded. Council officials have been criticised for failing to act.Read the full story ›
From the Government's point of view, too much of today's news agenda has been taken up discussing the spat between Theresa May and Michael Gove.
Theresa May is much-beloved on the Tory right, seen as a big success as Home Secretary and is leading the current polls for potential future leader of her party.
Michael Gove is very close to David Cameron and is leading - in Tory terms - critical education reforms.
They're both effectively unsackable members of the Cabinet.
If that wasn't the case, I think David Cameron would be thinking about sacking them for this extraordinary case of ill-discipline at a terrible time for the Government.
Extremism "anywhere in society is a serious problem" that is being tackled by ministers across departments, a Government spokesman said.
The message was sent out after an exchange between Theresa May and Michael Gove over the handling of the threat of Islamist extremism in schools in Birmingham.
There is no difference between the Education Secretary and the Home Secretary, who are both working energetically together to tackle the challenge posed by any form of extremism.
The spokesman added that the work of the Prime Minister's Extremism Taskforce demonstrated action being taken by government.
Speaking to BBC Radio 4's World At One, Conservative Party chairman Grant Shapps denied that the letter from May to Gove demonstrated a fight within the cabinet. He said:
It's somehow being suggested by commentators that this is somehow a big bust-up. In fact, I see Michael and Theresa work together all the time.