Michael Gove and Ofsted head Sir Michael Wilshaw have been accused of "demonising" communities affected by the 'Trojan Horse' investigation into schools in Birmingham.
David Hughes, a governor at Park View School, said people in his area felt "frightened, betrayed and let down" by the way the investigation has been conducted.
All three schools run by Park View Educational Trust - of which Mr Hughes is a vice chairman - have been placed into special measures following Ofsted inspections into a suspected takeover of schools by hardline Muslims.
Mr Hughes wrote a strongly worded open letter to Mr Gove and Sir Michael, saying: "I find it astounding that you are now so vehement in condemning us as negligent and derelict in our duties at best, and dangerous at worst."
"You have some very angry communities now who feel frightened, betrayed and let down by the way you have exploited the Trojan Horse hoax and demonised them," he added.
More top news
The 'sugar tax' outlined in Chancellor George Osborne's March budget will "hit the poor the hardest", critics claim.
A woman who was "dragged away" by a crocodile as her friend tried in vain to rescue her is reportedly still missing in Australia.
Police say at least one gunman armed with a high-powered rifle, began "shooting randomly" resulting in the death of a man in his 50s.