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.
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A seventh person has been arrested after the murder of a17-year-old in Northampton.
It will be damp and breezy with rain on and off through the day.
Mainly light rain arriving later in the night. On Saturday, mainly cloudy with periods of rain and some bright intervals.