GCSE students are believed to have achieved the best results in their school’s history “by some considerable margin”.
Roding Valley High School headteacher, Paul Banks, announced 68.3 per cent of pupils achieved five A*- C grades, including English and Maths.
This surpassed the previous record of 64 per cent, set last year.
The record comes after the government scrapped coursework in favour of end-of-year exams, which led to predictions that pass rates would fall nationally.
Mr Banks said: "In a national context, where GCSE results are dropping overall and grade boundaries are being pushed even higher, it is very pleasing to note that our students, once again, are bucking this trend.
"Our results this year are the best the school has ever achieved by some considerable margin and I would like to congratulate the students on their hard work and dedication.
Jake Leggat achieved the highest grades for the boys, with 6A* and an A,
He said: "When I opened my results I was so shocked, relieved and very happy.
“I am so proud to have achieved the highest results for the boys.
"After sixth-form, I would like to become an RAF fighter pilot or engineer."
Evelina Peterson, 16, will study art, business, biology and physics at A-level after achieving all A* and A grades.
She said: "I am lost for words, I am just so happy, and I am happy the exams and stress is over."
The school confirmed in July it will be opening a sixth-form in September next year.
Mr Banks added: "Our results are considerably above the national average and, coupled with the school being given a new sixth form next year, represent another notable achievement for everyone involved with the school."