Ysgol Tanycastell
Estyn
- Type
- Welsh establishment
- Phase
- Primary
- Location
- Gwynedd, LL46 2SW
- Distance
- 0.6km away
Ysgol Ardudwy
Ffordd Y Traeth, Harlech, Gwynedd, LL46 2UH
Local ranking14th of 14 secondary schools in Gwynedd
Inspected by Estyn
Secondary
Phase
Not published
Capacity
—
Age range
Not applicable
Gender
Year:
Key Stage 4 Results
2024-25*Data not available for 2025-26 — showing latest available results
- Capped 9 points score
- 321.2 Wales354.3·Gwynedd358.1
- Literacy points score
- 39.1 Wales38.6·Gwynedd40.6
- Numeracy points score
- 32.9 Wales36.0·Gwynedd36.2
- Science points score
- 32.2 Wales35.8·Gwynedd37.5
- Welsh Bacc Skills Challenge
- 31.0 Wales29.0·Gwynedd36.1
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
- 335
- SEND
- 16.4%
- FSM Eligible
- 11.4%
- SEN Support
- 16.4%
Attendance & Absence
2024-25*Data not available for 2025-26 — showing latest available results
- Overall Absence Rate
- 14.0% Wales7.3%·Gwynedd11.2%
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
- Has a sixth form
- Boarders
- Not applicable
Pupil Ethnicity
Loading chart
- White British: 98.4%
- Mixed White & Black African: 1.6%
98.4%
White British
1.6%
Mixed White & Black African
Historical Trends
KS4 Performance
Pupil Demographics
Attendance & Absence
Contact & Location
Ffordd Y Traeth
Gwynedd, Wales (pseudo)
Administrative
- Country
- Wales
- URN
- 401679
- UKPRN
- 10013884
- Establishment No.
- 4034
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