WJEC GCSE Biology grade boundaries
WJEC GCSE Biology grade boundaries for 6 series, June 2019 to June 2026, for the qualification as a whole and for each paper. Each table shows the lowest mark that got each grade, copied from WJEC's own document, which is linked underneath.
June 2026 WJEC GCSE Biology grade boundaries
Newest
| Qualification | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Biology | 400 | 36090% | 32080% | 28070% | 24060% | 20050% | 16040% | 12030% | 8020% |
| Unit | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Unit 1 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 2 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 3 | 40 | 3690% | 3280% | 2870% | 2460% | 2050% | 1640% | 1230% | 820% |
- WJEC reports these on the uniform mark scale (UMS): each unit’s raw mark is converted to a uniform mark and the grade comes from the total. The document gives uniform marks only, not the raw marks for each unit.
- Units marked Higher show the higher tier maximum; on the foundation tier the maximum is one mark below the grade B boundary.
Source: WJEC grade boundaries, GCSE June 2026 (opens wjec.co.uk in a new tab)
Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.
June 2025 WJEC GCSE Biology grade boundaries
| Qualification | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Biology | 400 | 36090% | 32080% | 28070% | 24060% | 20050% | 16040% | 12030% | 8020% |
| Unit | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Unit 1 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 2 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 3 | 40 | 3690% | 3280% | 2870% | 2460% | 2050% | 1640% | 1230% | 820% |
- WJEC reports these on the uniform mark scale (UMS): each unit’s raw mark is converted to a uniform mark and the grade comes from the total. The document gives uniform marks only, not the raw marks for each unit.
- Units marked Higher show the higher tier maximum; on the foundation tier the maximum is one mark below the grade B boundary.
Source: WJEC grade boundaries, GCSE June 2025 (opens wjec.co.uk in a new tab)
Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.
June 2024 WJEC GCSE Biology grade boundaries
| Qualification | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Biology | 400 | 36090% | 32080% | 28070% | 24060% | 20050% | 16040% | 12030% | 8020% |
| Unit | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Unit 1 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 2 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 3 | 40 | 3690% | 3280% | 2870% | 2460% | 2050% | 1640% | 1230% | 820% |
- WJEC reports these on the uniform mark scale (UMS): each unit’s raw mark is converted to a uniform mark and the grade comes from the total. The document gives uniform marks only, not the raw marks for each unit.
- Units marked Higher show the higher tier maximum; on the foundation tier the maximum is one mark below the grade B boundary.
Source: WJEC grade boundaries, GCSE June 2024 (opens wjec.co.uk in a new tab)
Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.
June 2023 WJEC GCSE Biology grade boundaries
| Qualification | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Biology | 400 | 36090% | 32080% | 28070% | 24060% | 20050% | 16040% | 12030% | 8020% |
| Unit | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Unit 1 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 2 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 3 | 40 | 3690% | 3280% | 2870% | 2460% | 2050% | 1640% | 1230% | 820% |
- WJEC reports these on the uniform mark scale (UMS): each unit’s raw mark is converted to a uniform mark and the grade comes from the total. The document gives uniform marks only, not the raw marks for each unit.
- Units marked Higher show the higher tier maximum; on the foundation tier the maximum is one mark below the grade B boundary.
Source: WJEC grade boundaries, GCSE June 2023 (opens wjec.co.uk in a new tab)
Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.
June 2022 WJEC GCSE Biology grade boundaries
| Qualification | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Biology | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
- WJEC reports these on the uniform mark scale (UMS): each unit’s raw mark is converted to a uniform mark and the grade comes from the total. The document gives uniform marks only, not the raw marks for each unit.
- Only the subject boundaries are shown for this series.
Source: WJEC grade boundaries, GCSE June 2022 (opens wjec.co.uk in a new tab)
Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.
June 2019 WJEC GCSE Biology grade boundaries
| Qualification | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Biology | 400 | 36090% | 32080% | 28070% | 24060% | 20050% | 16040% | 12030% | 8020% |
| Unit | Max mark | Grade: lowest mark, and % of max mark | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade A* | Grade A | Grade B | Grade C | Grade D | Grade E | Grade F | Grade G | ||
| Unit 1 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 2 (Higher) | 180 | 16290% | 14480% | 12670% | 10860% | 9050% | 7240% | 5430% | 3620% |
| Unit 3 | 40 | 3690% | 3280% | 2870% | 2460% | 2050% | 1640% | 1230% | 820% |
- WJEC reports these on the uniform mark scale (UMS): each unit’s raw mark is converted to a uniform mark and the grade comes from the total. The document gives uniform marks only, not the raw marks for each unit.
- Units marked Higher show the higher tier maximum; on the foundation tier the maximum is one mark below the grade B boundary.
Source: WJEC grade boundaries, GCSE June 2019 (opens wjec.co.uk in a new tab)
Use these on your question decks: keep them in your account, then choose them on any deck's Grade boundaries page to see your predicted grade against them.
Common questions
What were the Biology grade boundaries in June 2026?
In June 2026, an A needed 320 out of 400 uniform marks and a C needed 240. The full table, with the boundaries for each paper, is at the top of this page.
Where do these WJEC GCSE Biology grade boundaries come from?
Every number is copied from WJEC's own published grade boundary document for that series, which is linked under each table. We lay them out by course so you don't have to search a document covering every subject, and nothing is changed or estimated.
Why do grade boundaries change every year?
Boundaries are set after each exam has been marked, so that a grade means the same standard even when one year's paper is harder than another's. A harder paper usually has lower boundaries. That is why an old paper is best marked against its own year's boundaries, which is what the tables here are for.
When are new Biology grade boundaries published?
WJEC publishes grade boundaries on results day: for summer exams that is mid August for A levels and a week later for GCSEs, and November and January series get theirs on their own results days. We add them here after that, usually well before the papers themselves are released.
More grade boundaries: every WJEC course or every board.
cookie is independent and is not affiliated with or endorsed by any exam board. Every paper here is a link to the board's own copy on its own website, and the papers belong to the boards that set them. If a link has stopped working, the board's own past paper page is linked on each course. The grade boundaries are copied from the boards’ own published documents, each linked under its table.