Powys County Council is proposing to alter the language provision at Ysgol Dyffryn Trannon in Trefeglwys so that eventually it becomes a Welsh-medium education setting.
It is currently a dual-stream school providing English-medium and Welsh-medium education for pupils aged 4 to 11.
The council's cabinet today agreed to start a formal consultation on the proposal, which is planned to start in February.
If it goes ahead, the proposed change would be introduced on a phased basis, year-by-year, starting with the school’s Reception class in September 2022.
The proposed change would not affect those pupils already at the school – pupils currently accessing English-medium provision at the school would be able to continue to access this provision until they leave school.
Leader of Powys County Council, Cllr Rosemarie Harris, said: “The number of English-medium pupils at Ysgol Dyffryn Trannon has decreased over recent years.
“Currently there are less than 15 pupils in the English-medium stream and this causes a challenge to the school in providing appropriate provision for these learners.
“One of the aims in our Strategy for Transforming Education in Powys is to improve access to Welsh-medium provision across all key stages. We also have an objective in the strategy to move schools along the language continuum.
“In order to meet these aims and objectives, we want to move Ysgol Dyffryn Trannon along the language continuum. This would ensure that all pupils attending the school have the opportunity to become fully bilingual, fluent in both Welsh and English, therefore contributing to the Welsh Government’s aspiration to achieve a million Welsh speakers by 2050.
“We will now start formal consultation on the proposal to change the language provision at Ysgol Dyffryn Trannon so that it starts it journey towards becoming a Welsh-medium education setting.”