Grade boundaries show the minimum number of marks you need for each grade.
They are decided by examiners and published on results day.
Qualification Wales, which oversees Welsh exams, has said there is still a risk that performance in some subjects has not fully recovered since the pandemic.
So, it will use statistics to help set the grade boundaries, external, to prevent marks dropping below 2019 levels.
In England and Northern Ireland, the way boundaries are decided has returned to normal.
Only one change remains in place this year.
Ofqual, England‘s exam regulator, has said students in maths, physics, and combined-science exams are allowed to use formulae and equation sheets for the final time, external. This will not be allowed in 2025.
