Hawarden High School (Welsh: Ysgol Uwchradd Penarlâg) is an English language medium secondary school in Hawarden, Flintshire, Wales. It is part of the Flintshire LEA.The school traces its history back to 1606 when a single-classroom grammar school was established with £300 left by a local resident named George Ledsham. The current building occupying this place was first built in 1898 by local architects Grayson & Ould and W&T Bailey, and was extended throughout its history. Located on the same site is a Grade II listed building, the School Library, the former Headmaster's House.