The Labour MP, Nic Dakin, led a Westminster Hall debate on the marking of GCSE English, on 18 September 2012.
England's exams regulator, Ofqual, has refused to order exam boards to regrade this summer's English GCSE in a row over this year's results.
It acknowledged grade boundaries had changed part way through the year, but stood by the new June grading system.
Instead of regrading, pupils would be offered early resits in November, Ofqual said.
GCSE English grades at A* to C fell by 1.5%, but some schools saw much bigger falls.
The education minister in Wales, Leighton Andrews, has demanded that papers be regraded.
The debate will be led by the Labour MP for Scunthorpe, Nic Dakin.