BBC News Published image captionFormal exams were cancelled but students are sitting assessments on which their grades will be based The Scottish Qualifications Authority has written to schools about "very serious" incidents of students sharing details of assessments on social media. Formal exams were cancelled this year because of Covid but students are instead sitting assessments. Each school has its own arrangements but the SQA has provided question papers which they can use. It has emerged that pupils who have already sat the "exams" have been sharing information on the Tiktok app. Following reports of thousands of students discussing the questions on social media, the SQA wrote to schools on Monday to tell them they needed to investigate candidate malpractice and apply the "appropriate penalties".