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.

[1] 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Consortium, a group of three local high schools and the nearby sixth form college although Deeside College has now withdrawn from this consortium.

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