John Summers High School

John Summers High School (formerly Deeside High School) was an 11–18 mixed, English-medium, secondary school and sixth form in Queensferry, Flintshire, Wales. It closed on 20 July 2017.

Its sixth form education was provided through the Deeside Consortium, a group of three local high schools and the nearby sixth form college although Deeside College has now withdrawn from this consortium.