The WJEC has confirmed that over 2,000 GCSE students will have their English Language grades increased.
The exam board was ordered to re-grade the papers by Education Minister Leighton Andrews following concerns over a change in grading boundaries introduced mid-way through the academic year.
It has been confirmed that 1,202 students will have their grades increased from a D to a C and 598 from a C grade to a B.
The lowering of grade boundaries also meant there were some changes at other grades, resulting in an overall figure of 2386 receiving raised grades.
Emails released by Welsh Government show that the exam board warned that a regrade of GCSE English papers would affect integrity
Education Minister Leighton Andrews has told AMs he stands by his decision to order a regrade for this year's English Language GCSEs
Following the decision by Westminister to replace the GCSEs in England, the Welsh Government says it won't rush into a decision here.