Chigwell School student Bianca Andrei has been awarded a bronze medal representing the United Kingdom in the International Physics Olympiad (IPhO) in Mumbai in India.
This was an outstanding achievement given that Bianca still has a year to go to complete her A-levels.
Eighty-four countries were represented in the annual physics competition which is open to secondary school students from across the world.
It involved individual theoretical and experimental competitions in Physics.
Bianca said her experience in India was hard to describe due to the sheer scale of the Olympiad event but that it was amazing to meet and make friends from all over the world and learn more about the subject.
Bianca was the only female member of the UK's six-member team.
Chigwell School headmaster Michael Punt, who is also a physicist, said: "I am extremely proud of Bianca who has worked incredibly hard over the last few months, preparing for the Olympiad on top of her AS-levels."