Biology grade boundaries
Every Edexcel AS Biology boundary set we hold —6 awards across 3 series. Marks are raw marks for the whole subject, and every table links to the document it came from.
Grade A boundary over time
Shown as a percentage of the maximum mark, because the maximum changes when a board reforms a specification and raw marks stop being comparable.
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Turn a mark into a grade
This is the total for the whole subject, not one paper. Working from paper marks? Use the paper calculator below.
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Enter a mark to place it on the scale.
June 2026Latest
Open June 2026 with calculators →| Award | Code | Max | A | B | C | D | E | U |
|---|---|---|---|---|---|---|---|---|
| Biology | 8BI0 | 160 | 8956 | 7849 | 6843 | 5836 | 4830 | 00 |
| Biology (Salters Nuffield) | 8BN0 | 160 | 11773 | 10364 | 8956 | 7547 | 6239 | 00 |
June 2025
Open June 2025 with calculators →| Award | Code | Max | A | B | C | D | E | U |
|---|---|---|---|---|---|---|---|---|
| Biology | 8BI0 | 160 | 9257 | 8151 | 7044 | 6038 | 5031 | 00 |
| Biology (Salters Nuffield) | 8BN0 | 160 | 11169 | 9861 | 8553 | 7245 | 6038 | 00 |
June 2024
Open June 2024 with calculators →| Award | Code | Max | A | B | C | D | E | U |
|---|---|---|---|---|---|---|---|---|
| Biology | 8BI0 | 160 | 9257 | 8151 | 7044 | 6038 | 5031 | 00 |
| Biology (Salters Nuffield) | 8BN0 | 160 | 11673 | 10264 | 8855 | 7547 | 6239 | 00 |