Anna Brychan is from the National Association of Headteachers Cymru. She says she hopes the Education Minister's resignation won't cause progress on his policies to be lost.
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The fog is expected to become quite widespread and locally dense and freezing during the evening
A hospital has accepted liability for the death of a two-year-old boy who waited more than nine months for a key medical assessment.
A fine day will then follow with plenty of sunshine and light winds.