GCSE results for England, Wales and Northern Ireland have fallen, this year's figures have revealed.
In total, just over two-thirds of entries were awarded A*-C - which is considered by schools to be a "good" pass.
- A* grades fall for fifth year in a row**
For the fifth year in a row there has been a drop in top grades.
- Girls outperforming boys
The results also reveal that gender gap has increased slightly, by 0.5% this summer.
But both were down on last year, from 73.1% and 64.7% respectively.
- Girls leading the way with top grades
Girls also outperformed boys in terms of achieving top A* grades.
- JCQ: Change in subject entries 'impacts on results'
Michael Turner, director general of the JCQ, said significant movement in this year's entries has impacted on results and "creates a very complex national picture"
"We have seen shifts not only between subjects, but also across qualifications and year groups.
"This is driven by several factors, including performance measures and re-sit policies in England."