Edexcel A-level Biology grade boundaries 2026: A and B
A-level Biology: Year 1
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Two Biologies, two sets of lines
From Pearson's June 2026 GCE document. Check your paper code first: 9BN0 is Biology A and 9BI0 is Biology B.
| June 2026, out of 300 | A* | A | B | C | D | E |
|---|---|---|---|---|---|---|
| Biology A (Salters-Nuffield) 9BN0 | 220 | 196 | 170 | 144 | 119 | 94 |
| Biology B 9BI0 | 218 | 189 | 160 | 131 | 102 | 73 |
| AS, June 2026 (out of 160) | A | B | C | D | E |
|---|---|---|---|---|---|
| Biology A 8BN0 | 117 | 103 | 89 | 75 | 62 |
| Biology B 8BI0 | 89 | 78 | 68 | 58 | 48 |
| Specification | Paper 1 | Paper 2 | Paper 3 |
|---|---|---|---|
| Biology A (Salters-Nuffield) 9BN0 | The Natural Environment and Species Survival: 2 hours, 100 marks | Energy, Exercise and Co-ordination: 2 hours, 100 marks | General and Practical Applications in Biology: 2 hours, 100 marks |
| Biology B 9BI0 | Advanced Biochemistry, Microbiology and Genetics: 1 hour 45 minutes, 90 marks | Advanced Physiology, Evolution and Ecology: 1 hour 45 minutes, 90 marks | General and Practical Principles in Biology: 2 hours 30 minutes, 120 marks |
See the Edexcel A-level Biology guide. Other subjects are in Edexcel A-level grade boundaries 2026.
Biology A over three summers
| Biology A, out of 300 | A* | A | B | C | D | E |
|---|---|---|---|---|---|---|
| June 2024 | 199 | 171 | 144 | 117 | 91 | 65 |
| June 2025 | 225 | 200 | 173 | 146 | 119 | 92 |
| June 2026 | 220 | 196 | 170 | 144 | 119 | 94 |
From 2025 to 2026, Biology A moved A* −5, A −4, B −3, C −2, D 0, E +2. The 2026 A* line of 220 is 5 below 2025 and 21 above 2024. AS Biology A rose 6 at A, from 111 to 117.
Biology B over three summers
| Biology B, out of 300 | A* | A | B | C | D | E |
|---|---|---|---|---|---|---|
| June 2024 | 205 | 170 | 144 | 119 | 94 | 69 |
| June 2025 | 217 | 188 | 160 | 132 | 105 | 78 |
| June 2026 | 218 | 189 | 160 | 131 | 102 | 73 |
Biology B was steadier: A* +1, A +1, B 0, C −1, D −3, E −5. AS Biology B fell at every grade, from A 92 to 89, after being the same in 2024 and 2025.
A 2026 worked example for each
- Biology A. 62, 60 and 58 on the three 100-mark papers is 180 out of 300. That is above 170 (B) and below 196 (A): a B, 16 marks short of an A.
- Biology B. 55 on Paper 1, 58 on Paper 2 and 70 on Paper 3 is 183. That is above 160 (B) and below 189 (A): a B, 6 marks short of an A.
The Biology B student is 6 marks off an A, where the Biology A student is 16 off, so a similar total sits closer to the A in Biology B.
Reading the 2026 shares
- Biology A: A* is 73% and A is 65%.
- Biology B: A* is 73% and A is 63%.
- Do not mix specifications. The same share lands in a different grade on the other table.
Check a share with today's Biology Year 1 or Year 2 paper. It is 8 questions and 25 to 35 marks, not an Edexcel paper.
Common questions
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UK · A-levelEdexcel A-level grade boundaries 2026: marks for each gradeThe official Edexcel A-level boundaries for June 2026 in Maths, Further Maths, Physics, Chemistry and Biology, with 2024 and 2025 for comparison.