School pupils across Scotland have been warned against sharing details of assessments on their social media.

In a letter from the Scottish Qualifications Authority (SQA) sent to schools on Monday, director of qualifications development Dr Gill Stewart said they had been made aware of “very serious incidents” of assessments being shared.

The letter goes on to say “appropriate penalties” should be applied to pupils in breach of exam rules, but these should be used by individual schools and not by the SQA.

The letter said the SQA provided “optional secure assessment materials” for schools to use, but given the extra flexibility afforded to teachers and schools this year, pupils across the country are sitting exams at different times, meaning questions could be leaked.

As a result of coronavirus, the exams in Scotland were cancelled and replaced with internal assessments, but critics have claimed these are exams by another name.

The Times Educational Supplement Scotland reported on Monday of an “SQA black market” on the social media site TikTok, with pupils “begging” for questions to be shared before they sit their assessment.

The letter said: “SQA has been made aware of very serious incidents involving candidates sharing confidential assessment content on social media.

“We are taking this matter very seriously and have contacted the centres to ensure that the posts are removed as soon as possible, and that any candidate malpractice concerns are managed locally within the centres.”

Dr Stewart added: “Learners should all be reminded that they must not discuss or share the content of assessment materials.

“If you become aware of a candidate malpractice concern, your own centre’s malpractice procedures are to be applied as quickly as possible to contain any potential security breaches.

“If the malpractice investigation finds that there has been candidate malpractice, then appropriate penalties should be applied.”

The letter concluded: “Maintaining the confidentiality of these assessment materials is critical to the credibility of the alternative certification model.”