Staff and students at Astley Community High School were elated with the GCSE results.
A total of 82 per cent of Year 11 students secured A*-C grades in English Language while 76 per cent secured a top grade in maths.
It mean the Seaton Delaval school saw 70 per cent of students get five A* to C grades, including English and maths – a five per cent rise on the previous best of 65 per cent achieved in 2012.
Executive headteacher John Barnes said: “In what has been a very turbulent year for everyone involved in education, I am extremely pleased with how the students of Astley High School have performed.
“These results are the stepping stones to the next stage in the life stories of these young people and I wish them all the very best for the future.
“Everyone associated with the school should be very proud of all that has been achieved this year. These results are right up there and will prove to be some of the best achieved by students in Northumberland schools.
Head of school, Annette Rhodes, said “These are exciting times for Astley High School, not least as projections for next summer are even better.”