Millions of pupils across England, Wales and Northern Ireland are preparing to receive their GCSE results this week, with results day falling on Thursday, August 20. The marks needed for each grade are not fixed from year to year; instead, exam boards set grade boundaries after exams are taken and marking is nearly complete.
What are GCSE grade boundaries?
A grade boundary is the minimum mark a student needs to achieve a particular GCSE grade. Boundaries normally change annually to account for differences in exam paper difficulty and to maintain consistency between different cohorts.
In England, GCSEs are graded from 9 to 1, with 9 the highest grade and U meaning "ungraded". A grade 4 is a "standard pass", while grade 5 or above is a "strong pass". Students receiving grade 3 or below in GCSE maths or English language generally must continue studying and resit the subject. Wales uses A to G*, and Northern Ireland uses letter grades, including the C* grade introduced in 2019.
How are boundaries decided?
Grade boundaries are not fixed before exams; they are determined once marking is nearing completion. Senior examiners consider factors including paper difficulty, student performance, and answer quality. If a paper is harder than in a previous year, students may need fewer marks for the same grade; easier papers can lead to higher boundaries. This process is standardised across exam boards to keep results fair and comparable between years.
There is no confirmed answer beforehand on whether 2026 boundaries will be higher or lower than in 2025.
Can marks be rounded up?
Students will not normally see on their results slip how far they were from the next grade. They should receive marks for individual papers, and exam boards publish boundaries on results day. Marks are not routinely rounded up if a pupil falls one or two marks short. In some components, marks can be scaled to ensure correct weighting, with figures rounded to the nearest whole number, as in modern foreign languages where listening, reading, speaking, and writing are equally weighted despite different maximum raw marks.
Official boundaries are published by exam boards including AQA, Pearson Edexcel, OCR, CCEA, and WJEC, allowing pupils to compare their marks with thresholds for each grade.
