Investigations are under way at a high school after a teacher allegedly made changes to students' exam papers.
Nicholas Hamond Academy in Swaffham confirmed investigations were taking place following a report of alleged malpractice.
The school, run by the Academy Transformation Trust, said the allegation related to a former staff member.
It is understood that papers from sixth form students taking a level three health and social care exam at the academy this summer were "edited" by a teacher before being submitted to the exam board.
As a result the students' grades are understood to have been suspended pending the outcome of the investigation.
A spokesperson for Nicholas Hamond Academy said: "We reported an allegation of malpractice at the earliest possible stage and investigations are under way, including internally, relating to a former teacher.
"It would not be appropriate to say anything further at this stage and until the investigations are complete."
A new headteacher, Mark Woodhouse, took over at Nicholas Hamond Academy in September 2018. He pledged to improve the school and rebuild its reputation following a turbulent period which saw the previous headteacher sacked.
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