| School | Address | Town | County | |
|---|---|---|---|---|
| Ysgol Rhydypennau | Bow Street | Ceredigion | Select | |
| Ysgol Rhys Prichard | Llanfair Road | Carmarthenshire | Select | |
| Ysgol San Sior | Church Walks | Conwy | Select | |
| Ysgol Sant Baruc | Ffordd Y Mileniwm | Barry | Select | |
| Ysgol Sant Curig | College Road | Barry | Select | |
| Ysgol Sant Dunawd | Sandown Road | Wrexham | Select | |
| Ysgol Santes Dwynwen | Llanfairpwllgwyngyll | Select | ||
| Ysgol Santes Fair, St Mary' s R.C. School | Longford Road | Anglesey | Select | |
| Ysgol Santes Helen | Twtil | Gwynedd | Select | |
| Ysgol Sarn Bach | Sarn Bach | Gwynedd | Select |