The OCR examination board says students taking GCSEs this year had the same chance of getting the same grade as last year.
OCR's Chief Executive Mark Dawe says the results for 16-year-olds are relatively stable but the overall picture is being affected by younger pupils taking exams early.
More top news
A man has been arrested on suspicion of murder following a fatal stabbing in Bury St Edmunds.
Dry with warm sunny spells, the best of these during the morning
The former MP turned celebrity ED Balls has received an honorary degree from the University of East Anglia where his father was a lecturer.