A-level students in several countries, including the UK, have had their exam papers voided after it emerged they had been leaked online, according to BBC.
Cambridge International Education, the exam board affected, said it had “moved quickly to put alternative measures in place for impacted students.”
Some of those students will receive “assessed marks” based on how they did in other parts of the course.
“We know how frustrating and disappointing this incident has been for students taking these particular subjects, and their families and schools,” a spokesperson told BBC.
Physics papers, which were sat last week had to be voided, while some of the same exam board's maths papers were also leaked earlier this month.
It is mostly international students who are affected, the exam board said, but the papers are also sat by some students in independent schools across the UK.
They are different from Cambridge OCR exams taken in UK state schools.
In a statement online, the exam board said its priority was to make sure it was fair to students “who did not cheat, which is the vast majority.”
Affected students' marks for the exam will be disregarded, with a mark instead being calculated for each student based on their performance in other components in the syllabus.
Over 5,000 schools around the world offer Cambridge International Education's AS and A-levels, in 138 countries, according to its website.
