Islwyn High School

Secondary school

Islwyn High School is a secondary school in Caerphilly. It had 1,047 pupils at the school census in January 2026.

Schools in Wales are inspected by Estyn, which has given no summative grades since September 2022. The Welsh Government publishes no open file of school results, so none are shown.

Schools nearby

In a straight line

Ysgol Gynradd Gymraeg Cwm DerwenPrimary. Ofsted inspects schools in England only410 m
Rhiw syr Dafydd Primary SchoolPrimary. Ofsted inspects schools in England only490 m

Admissions and catchments are set by councils and schools, which Open Index doesn’t map. Every school in Caerphilly

Where these figures come from

Schools: the school lists of the Department for Education, the Welsh Government and the Scottish Government, with Ofsted’s latest inspections for England.