The King’s School saw 26 A-Level pupils receive all As and A*s.
Two thirds of all results were A*-B, with 37 per cent of grades being A*s or As.
The pass rate was 99.8 per cent.
Headteacher Darren Ayling said: “It has been another excellent year on average point score per entry, and with 187 pupils in the cohort, this was a real testament to the very hard work of all involved.
“Twenty six students in the year group recorded straight A* and A grades, but the real success story has been how well all students have done, whatever their academic profile.
“That they have achieved such wonderful results, while being so busily involved in all aspect of the extra-curricular life of the school, is a real credit to them and to the families and staff who have supported them.
“We wish them every success in the next phase of their studies and wider professional lives. Well done to one and all!”