Ofsted has branded the council's efforts to support and challenge weaker schools as "ineffective".
It follows a recent five day inspection in the county. Ofsted claims there was a "legacy of under achievement", because the council had been too slow to intervene.
The Chief Inspector even went onto say the complacency had "denied tens of thousands of children the chance of a decent education".
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Showers easing with clear spells overnight. Strong winds easing.
Sunday forecast: Heavy rain is expected for a time with gusty winds, then clearing during the afternoon.
March in the Anglia region has been much drier and sunnier than normal although temperatures have been around average.