It was founded by Walter Bigg in 1659 in association with the Worshipful Company of Merchant Taylors, formally succeeding Wallingford Grammar School when it merged with Blackstone Secondary Modern in 1973.

The Headteacher is John Marston who joined the school in September 2019 following the retirement of the previous head, Wyll Willis.

[4] Wallingford School features two parts - the secondary school, and a sixth form college which merge to feature the same teachers, lesson structure, subjects, timetable, etc... Sixth Form students are part of the house system and have their own competitions that contribute to the overall scores.

All students at Wallingford School are guaranteed a place in Sixth Form, whatever their results at 16.

These students can spend a year studying five GCSE subjects to retake, then continue with A Levels at the sixth form.