Sixth-form students at King William's College have achieved a pass rate of 95 per cent in their International Baccalaureate exams.
The IB Diploma was introduced at the College eight years ago as an alternative to A-levels and is taught at more than 200 schools around the world.
This year's pass rate compares with the global average of 85 per cent.
King William's students scored an average 32.6 points out of a possible 45.
Five students scored 40 points or more, placing them in the top six per cent of IB students worldwide.
Head girl Poppy Walker secured a place to read Psychological Sciences at Keble College, Oxford.
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