Increase in supply teaching to cover absences 'hits learning'
An increasing use of supply teachers to cover sickness absence is affecting pupils' learning, two critical reports warn.
Reliance on temporary cover when teachers are absent means pupils are often given work which is not demanding, said the Wales Audit Office and watchdog Estyn.
They said secondary school pupils were worst affected by the issue.
The Welsh government said it will consider the findings of the reports.
BBC Wales education correspondent Arwyn Jones finds out how one high school in Denbighshire has managed to reduce its need for supply teachers.