Which subjects are tiered, which grades each tier allows, and the questions to ask before your tier entry is confirmed.
In some GCSE subjects you sit either the foundation tier or the higher tier paper. The choice decides which grades are available to you, so it is one of the most important exam decisions in Year 11. This guide explains how tiers work, which grades each tier allows, and how schools and families usually decide.
Tiering lets students sit papers pitched at a level that suits them. Foundation papers concentrate on core content and include more accessible questions. Higher papers cover the full content, including the most demanding topics, and include harder questions aimed at the top grades.
In England, the main tiered GCSEs are maths, the sciences (biology, chemistry, physics and combined science), modern foreign languages and statistics. Most other subjects, such as English, history and geography, have a single paper that everyone sits.
| Subject | Foundation tier | Higher tier |
|---|---|---|
| Maths, single sciences, languages (9 to 1 GCSEs) | Grades 1 to 5 | Grades 4 to 9, with an allowed grade 3 |
| Combined science (double award, two grades) | Double grades from 1 and 1 up to 5 and 5 | Double grades from 4 and 4 up to 9 and 9, with a small safety net of allowed grades just below 4 and 4 |
Two points are worth knowing:
Grades 4 and 5 can be achieved on either tier. Our guide to grade boundaries explains how the grades themselves are set.
Schools make tier entries some months before the exams, so the decision is usually based on mock exam results, classwork and teacher judgement during Year 11. All of a student's papers in a subject are normally sat at the same tier, so the choice applies to the whole qualification rather than one paper.
Teachers will typically consider:
If you are unsure about a tier entry, these questions make the conversation more useful:
Find foundation and higher papers for every board on our maths, biology, chemistry and physics pages.
No. In 9 to 1 GCSEs, the highest grade available on the foundation tier is grade 5.
If you narrowly miss grade 4, you can be awarded a grade 3. If your mark is below the grade 3 boundary, the result is U.
Normally no. In tiered GCSEs, all of your papers in a subject are entered at the same tier.
No. GCSE English language and English literature in England are not tiered. All students sit the same papers.
Your school makes the entry, usually based on teacher judgement and mock results. Students and parents can discuss it with teachers before the entry deadline.
Updated October 2026