The schools inspectorate Estyn says the quality of local authority education services for children and young people in Monmouthshire and Merthyr Tydfil is "unsafisfactory".
It is recommending both should be taken into special measures.
The reports say the councils have not done enough to work out where they need to improve, and how best to help poor performing schools.
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A windy day with a mixture of blustery showers and some sunny spells.