| School | Address | Town | County | |
|---|---|---|---|---|
| Ysgol Brynaerau | Pontllyfni | Gwynedd | Select | |
| Ysgol Brynhyfryd | Mold Road | Denbighshire | Select | |
| Ysgol Brynrefail | Llanrug | Gwynedd | Select | |
| Ysgol Cae Top | Ffordd Eithinog | Bangor | Gwynedd | Select |
| Ysgol Cae'r Gwenyn | Prince Charles Road | Wrexham | Select | |
| Ysgol Cae'r Nant | Mold Road | Connah's Quay | Flintshire (Sir y Fflint) | Select |
| Ysgol Caer Drewyn | Clawdd Poncen | Denbighshire | Select | |
| Ysgol Caer Elen | Withybush Road | Haverfordwest | Select | |
| Ysgol Caergeiliog Foundation School | Caergeiliog | Caergybi | Select | |
| Ysgol Calon Cymru | College Road | Builth Wells | Select |