The Ofsted chief inspector has said that under a regional structure, inspectors are now "closer to the ground" with schools than ever before.
In a statement, Sir Michael Wilshaw said:
It's vitally important that we remain vigilant for such problems developing in any part of the country.
Under Ofsted's regional structure, our inspectors are now closer to the ground and to those we inspect than ever before.
Where we hear of concerns, we will respond swiftly in order to reassure parents and the wider community that children are receiving the good, safe and well-rounded education to which they are entitled.
Sir Michael also confirmed that inspections in a number of other areas outside Birmingham - where there have been claims of a plot by hardline Muslims to take over schools - are now being conducted.
More top news
She described being told to lose weight at a "humiliating" nude line-up as more stars speak out after Harvey Weinstein scandal.
It is "unthinkable" that the UK will walk from Brexit talks without a deal at least covering security, Home Secretary Amber Rudd has said.
Ulster rugby stars Paddy Jackson and Stuart Olding are to stand trial on charges of rape, a Belfast court has ruled.