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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There'll be some dense patches of mist and fog about first thing this morning but it will clear later. Then, a cloudy but mostly dry day.
It will be a bright start in places but the cloud will thicken from the north during the afternoon and there'll be a few spots of rain.
Students at the University of Cambridge have raised money for charity by producing their own naked calendar.