Education Secretary Michael Gove has said there are "lessons to be learned" from the GCSE English grading fiasco.
The crisis, which has seen thousands of students awarded lower than expected grades in the key subject, shows the need for reform, he said.
Giving evidence to the Commons education select committee, Mr Gove said: "What happened with GCSE this year caused understandable concern for parents, teachers and students and I think it's appropriate we examine what's happened in a sober fashion and also in a rigorously analytical way.
"I think there are certain lessons to be learned which encourage me to believe that we need to reform qualifications."
Mr Gove's remarks come after exam regulators in England and Wales were urged to agree a "common view" on how to deal with the GCSE grading crisis.