Ysgol Gymraeg Cwm Derwen
Estyn
- Type
- Welsh establishment
- Phase
- Primary
- Location
- Blackwood, NP12 0JL
- Distance
- 0.4km away
Islwyn High School
Penmaen Road, Oakdale, Blackwood, NP12 0DT
Local ranking8th of 11 secondary schools in Caerphilly
Inspected by Estyn
Secondary
Phase
Not published
Capacity
—
Age range
—
Gender
Year:
Key Stage 4 Results
2024-25*Data not available for 2025-26 — showing latest available results
- Capped 9 points score
- 363.4 Wales354.3·Caerphilly342.2
- Literacy points score
- 38.3 Wales38.6·Caerphilly37.1
- Numeracy points score
- 35.3 Wales36.0·Caerphilly34.0
- Science points score
- 37.5 Wales35.8·Caerphilly33.9
- Welsh Bacc Skills Challenge
- 38.0 Wales29.0·Caerphilly31.5
Welsh Government interim KS4 measures, from My Local School. Points scores are averages across the cohort and are not comparable with England's Attainment 8.
Pupil Demographics
2025-26- Total Pupils
- 1065
- SEND
- 10.2%
- FSM Eligible
- 20.5%
- EAL
- 0.8%
- SEN Support
- 10.2%
Attendance & Absence
2024-25*Data not available for 2025-26 — showing latest available results
- Overall Absence Rate
- 9.9% Wales7.3%·Caerphilly7.4%
Attendance from My Local School (Welsh Government). Wales does not publish per-school persistent absence.
School Information
- Type
- Welsh establishment
- Phase
- Secondary
- Nursery
- Not applicable
- Sixth Form
- Not applicable
Pupil Ethnicity
Loading chart
- White British: 96.6%
- White Other: 1.9%
- Mixed Other: 1.5%
96.6%
White British
1.9%
White Other
1.5%
Mixed Other
Historical Trends
KS4 Performance
Pupil Demographics
Attendance & Absence
Contact & Location
Penmaen Road
Blackwood, Wales (pseudo)
Administrative
- Country
- Wales
- URN
- 402388
- UKPRN
- 10062667
- Establishment No.
- 4104
Schools like this
The nearest secondary schools to Islwyn High School
Rhiw Syr Dafydd Primary School
Estyn
- Type
- Welsh establishment
- Phase
- Primary
- Location
- Blackwood, NP12 0NA
- Distance
- 0.6km away
Blackwood Comprehensive School
Estyn
Score
D46
- Type
- Welsh establishment
- Phase
- Secondary
- Location
- Blackwood, NP12 1ER
- Distance
- 2.3km away
Crumlin High Level Primary School
Estyn
- Type
- Welsh establishment
- Phase
- Primary
- Location
- Newport, NP11 4PX
- Distance
- 2.5km away
Blackwood Primary School
Estyn
- Type
- Welsh establishment
- Phase
- Primary
- Location
- Blackwood, NP12 1WA
- Distance
- 2.6km away
Trinant Primary School
Estyn
- Type
- Welsh establishment
- Phase
- Primary
- Location
- Crumlin, NP11 3JN
- Distance
- 2.6km away