The decision follows a call from all nine of the county's MPs to resign after a damning inspection by the schools watchdog, Ofsted.
Norfolk County Council says Ms Christensen is taking early retirement and will receive only her contractual entitlement. She will receive two months’ gross salary in lieu of notice - £23,248.
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The University of Cambridge has topped a national league table which measures universities across the UK.
Scattered heavy showers and feeling chilly on Wednesday.
The Tour of Britain is coming to the region with Suffolk and Essex hosting two stages of the event.