Thirteen pupils from Oundle School will be taking up places at Oxford or Cambridge after securing their required A-level grades.
One in four results at the school were at A* grade, and 59.4 per cent of grades were either A* or A.
Eighty pupils were awarded three A grades or better and 35 pupils achieved four A grades or better. Both of these figures represent improvement from 2013 and come against a national picture of a decline in the proportion of A grades achieved.
Twelve pupils scored at least four A* grades, beating the previous record of eight. Ellie Cook, Chris Gilmartin, Viren Pandya, Rosie Vince, Abby Wong and Brian Wong each scored five A* grades.
Headmaster Charles Bush said: “I am delighted that Oundle pupils have performed extremely well, confirming the excellent findings of the inspectors from the ISI (Independent Schools Inspectorate) earlier in the year.
“The results represent tremendous efforts by both pupils and teachers. We are grateful for the academic leadership shown by this group of pupils during their time at the School and are proud of all their achievements.
“They deserve real congratulations on their success and have set up some wonderful opportunities for their futures.”