Ysgol G.G. Castellau, Rhondda, Cynon, Taff

Ysgol G.G. Castellau is a Welsh-medium school in Wales. Welsh schools are inspected by Estyn rather than Ofsted, and its latest report is published on Estyn's website.

It had 248 pupils in the 2025/26 school census.

8% of pupils are eligible for free school meals (three-year average).

Year groups range from 22 pupils (Year 2) to 33 (Year 5).

Estyn's report on its October 2023 inspection summarises Ysgol G.G. Castellau like this:

"The headteacher is an energetic and conscientious leader who has a highly effective influence on the school and its community. Along with the deputy headteacher and the staff, who work highly successfully as a team, he ensures that the school provides an effective, homely, familial and Welsh learning community for children in the area. The school is a very inclusive community that promotes the well-being of pupils and staff extremely well. Staff identify the specific needs of pupils at an early stage and use the thorough knowledge they have of their progress to plan the next steps for them. As a result, nearly all pupils are happy at the school and most make good progress from their starting points. Staff have high expectations of pupils and encourage them to give of their best in everything they do."

"They plan valuable and purposeful experiences for them, which ensure that they enjoy learning and develop their knowledge, skills and understanding continuously. Teachers develop pupils’ literacy and numeracy skills effectively, alongside several other skills. However, teachers do not provide enough opportunities for pupils to develop the full range of digital skills. They also do not encourage pupils to use and develop their independent learning skills effectively enough. The school provides beneficial opportunities for pupils to identify with the local community and the wider world and provides important opportunities for them to take part in performances at the school, in the local community and more widely. Most pupils undertake their leadership responsibilities maturely."

"They do this through the school’s wide range of children’s councils. They discuss their responsibilities confidently and give sensible reasons for making specific decisions. Leaders have an extremely productive relationship with parents and ensure that they have effective communication processes with them to enable them to raise any issues that may affect their children’s learning and well-being. Governors support the school well and hold leaders to account appropriately, when necessary."

Estyn made 2 recommendations: (1) Provide comprehensive opportunities for pupils to develop all aspects of the Digital Competence Framework; (2) Ensure regular and suitable opportunities for pupils to develop their independent learning skills.

The nearest other state primary schools to Ysgol G.G. Castellau are Llwyncrwn Primary School (0.2 miles), Gwaunmeisgyn Primary School (0.5 miles), Llantrisant Primary (1.1 miles) and Maesybryn Primary School (1.3 miles).

The nearest railway station is Pontyclun Rail Station, about 2.7 miles away in a straight line.

6 bus stops are within a five-minute walk; the closest is Square (after), 160 metres away.