Many schools genuinely do fall short of standards as these become ever more demanding. I believe that most heads do the best that they can to meet the constant call for improvement.
Readers will recall Lord Acton's famous statement about the possession of absolute power. Ofsted and the local education authorities are endowed with a great deal of power, and their activities are not subject to the same level of public domain scrutiny as those of schools.
Once an education authority - whether Ofsted or an LEA - has set its sights on a headteacher, he or she may have difficulty in maintaining their position.
RC Bell 26 Grenaby Avenue Croydon