Biology grade boundaries
Every Edexcel A-level 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.
3000218A*189A160B131C102D73E0
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.
of 300
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Enter a mark to place it on the scale.
June 2026Latest
Open June 2026 with calculators →| Award | Code | Max | A* | A | B | C | D | E | U |
|---|---|---|---|---|---|---|---|---|---|
| Biology | 9BI0 | 300 | 21873 | 18963 | 16053 | 13144 | 10234 | 7324 | 00 |
| Biology (Salters Nuffield) | 9BN0 | 300 | 22073 | 19665 | 17057 | 14448 | 11940 | 9431 | 00 |
June 2025
Open June 2025 with calculators →| Award | Code | Max | A* | A | B | C | D | E | U |
|---|---|---|---|---|---|---|---|---|---|
| Biology | 9BI0 | 300 | 21772 | 18863 | 16053 | 13244 | 10535 | 7826 | 00 |
| Biology (Salters Nuffield) | 9BN0 | 300 | 22575 | 20067 | 17358 | 14649 | 11940 | 9231 | 00 |
June 2024
Open June 2024 with calculators →| Award | Code | Max | A* | A | B | C | D | E | U |
|---|---|---|---|---|---|---|---|---|---|
| Biology | 9BI0 | 300 | 20568 | 17057 | 14448 | 11940 | 9431 | 6923 | 00 |
| Biology (Salters Nuffield) | 9BN0 | 300 | 19966 | 17157 | 14448 | 11739 | 9130 | 6522 | 00 |