St Teilo's C.I.W. High School, Cardiff

St Teilo's C.I.W. High School is an English-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 1397 pupils in the 2025/26 school census.

28% of pupils are eligible for free school meals (three-year average).

Of its pupils, 5% have additional learning needs (17% in 2020/21); 2% are learning English as an additional language; and 47% are from Black, Asian and minority ethnic backgrounds.

Year groups range from 74 pupils (Year 13) to 259 (Year 9).

Its delegated budget for 2026-27 works out at £5,505 per pupil, against £4,869 in 2021-22. It carried forward £18k of reserves at the end of 2024-25.

Estyn's report on its March 2022 inspection summarises St Teilo's C.I.W. High School like this:

"The headteacher and his staff at St. Teilo’s are united in their strong commitment to keeping pupils safe, raising their aspirations and helping them to develop and achieve. The Christian values of the school underpin all its work, helping it to create a caring ethos where pupils feel valued and well supported. During the COVID-19 pandemic, the school responded to the needs of its pupils and local community with flexibility and dedication. As pupils have returned to school, staff have worked hard to protect and enhance pupils’ well-being alongside supporting progress in their learning."

"In many lessons, teachers’ high expectations and careful planning help pupils to both readjust to normal school life and make sound progress in their knowledge, understanding and skills. In a minority of instances, teachers do not challenge pupils consistently well enough, which reduces the progress that they make. The school provides an extensive range of effective pastoral support to meet pupils’ needs and ensures that pupils with additional learning needs get the help that they require. There is a strong culture of safeguarding, and staff have a clear understanding of their role in supporting pupils’ safety and well-being through all aspects of their work. However, the school canteen is currently closed, and the school is not providing pupils with hot meals or sufficient access to drinking water."

"Leaders have a clear vision for developing a Curriculum for Wales that closely matches its ambition for creating ‘brilliant learners’. The school adapts its curriculum to meet the needs of individual and groups of pupils, although currently it does not meet statutory requirements in a few subject areas. The headteacher provides strong, thoughtful leadership and his commitment to equity and success for all pupils and the school community is shared by staff and governors."

Estyn made 3 recommendations: (1) Resolve the issues that are currently preventing the school providing hot meals in the canteen, and improve pupils’ access to drinking water; (2) Improve the effectiveness of teaching in a minority of lessons, so that pupils are consistently challenged to achieve as highly as possible; (3) Ensure that the curriculum meets all statutory requirements.

On phones, the school says: "Mobile phones of any type are not permitted in school building."

Coming up: an open evening on Monday 2 November 2026 and an open evening on Wednesday 11 November 2026. Check the school's website before you go, as dates can change.

The nearest other state secondary schools to St Teilo's C.I.W. High School are Ysgol Gyfun Gymraeg Bro Edern (0.8 miles), Eastern High (1.2 miles), Cardiff High School (1.3 miles) and St Illtyds R.C. High School (1.4 miles).

The nearest railway station is Heath High Level Rail Station, about 1.6 miles away in a straight line.

4 bus stops are within a five-minute walk; the closest is St Teilo's School (inside), 60 metres away.