GCSE grade changes 'affected 10,000 students'
Late grade changes to English GCSEs meant 10,000 pupils were marked down, according to an educational think tank the Centre for Education and Employment Research.
The NAHT union is demanding that Education Secretary Michael Gove sets up an independent inquiry, while the head teachers' leaders union said it had been inundated with calls about the grade changes, and has written a letter to both Mr Gove and the exams regulator.
Regulator Ofqual says it believes this year's GCSE grades are correct.
Susana Mendonca reports.
25 Aug 2012