A-level and GCSE students in England are being promised their final results will be no lower than their mock exams.
The Department for Education announced a "triple lock" - which could boost the replacement grades for exams cancelled in the pandemic.
It means pupils getting A-level results this week can accept that grade, based on teacher estimations, or change it for a mark gained in a mock exam.
Or they can instead choose to take the exam in the autumn.
The same system will apply for GCSE results a week later.
Read more in BBC News
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