The Education Secretary Michael Gove paid tribute to Lady Morgan for her "tremendous contribution" to the work of Ofsted.
She has brought great knowledge and insight, leading the board strongly through a period of significant change, both managing the smooth transition when there were changes in Chief Inspector, and leading the reforms to the inspectorate and its work.
I hope that she continues to play an active role in helping to shape the education landscape to improve standards for all children and young people.
Lady Morgan told The Independent: "Ofsted plays a crucial role in delivering independent inspection that is trusted by the public and particularly by parents. I am proud of helping lead Ofsted through a period of reform that has strengthened our inspections."
More top news
The downpours will be more well scattered across southern locations.
A Sat Nav mix-up led to a Welsh family missing a Euro 2016 game after ending up in Belgium's Lille instead of the northern French city.
I have recently returned from the Somme battlefields and I think of a young Sikh man who left a village in India to fight - my grandfather.