Daniel 
Phasing out teaching in English in one county could worsen a "crisis" in recruiting and retaining teachers, an education union has said.
Gwynedd, one of two counties where Welsh is spoken by the majority of people, laid out plans to phase out English-medium streams from the vast majority of secondary schools in a new draft policy.
Cyngor Gwynedd said it was part of an effort to bolster the use of Welsh in schools.
But a council meeting has heard it was already difficult to attract staff to the county and, nationally, teachers were leaving the profession "in droves".
The comments were made during a debate over the draft revised education language policy last week.
The council is aiming for 70% of lessons to be taught in Welsh but the branch secretary of the National Education Union (NEU), Elise Poulter, has raised concerns over training, funding and the impact on the Welsh language immersion system.
Welsh is already the predominant medium of teaching across Gwynedd, but schools including Bangor's Ysgol Friars, Catholic primary Our Lady's School and Ysgol Uwchradd Tywyn, are "transitioning" towards full Welsh medium provision.
