Yes. So, if you look at it—with the usual caveats about whether you can make direct comparisons on level 2 plus between the exams the year before and the exams that we had last summer—on the face of it, the gap has increased. I think what's important to recognise, Hefin, is a direction of travel. I'm sure we all want to, because I want to, have a discussion about why children on free school meals were less resilient in the exam system last year. But, if we look at the period that we have been employing PDG, over that period, we have seen a narrowing of the gap. I think what's quite stark, if we think about it—. So, if we look at where we started from: in 2009, one in five children on free school meals got level 2 plus—one in five—by 2016, we had got that down to one in three. Obviously, there's still a way to go, but, Sir Alasdair, who knows about these things, says that that is a significant improvement. Last year, we got some challenges. We need to understand why that happened, but I do think it's—
Why, do you think?
Why, do I think? What I do think is there is no one answer. There is no one answer to this. I think we could look at and we can have discussions around the move from BTEC to science GCSEs. I think we have supplied figures to the committee about the significant change in the number of children on free school meals who weren't doing a single science GCSE and are now doing science GCSEs. We can look at the unintended consequences of literature. Again, we've supplied figures. Where children have done language and literature, whether that be through the medium of English or through the medium of Welsh, there is more resilience. So, it's that exposure to literacy in all its forms that I think could potentially make a difference. So, I think there's no one answer to why free-school-meal children were not so resilient last year. We continue to have discussions with Qualifications Wales to get a better understanding of this. At my next ministerial policy board, in May, we'll be doing a deep dive into this particular subject.
So, to what extent would exam boards be responsible for lack of grade stability?