Chemistry grade boundaries
Every Edexcel AS Chemistry boundary set we hold —3 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 |
|---|---|---|---|---|---|---|---|---|
| Chemistry | 8CH0 | 160 | 12176 | 10465 | 8855 | 7245 | 5635 | 00 |
June 2025
Open June 2025 with calculators →| Award | Code | Max | A | B | C | D | E | U |
|---|---|---|---|---|---|---|---|---|
| Chemistry | 8CH0 | 160 | 10666 | 9257 | 7849 | 6440 | 5132 | 00 |
June 2024
Open June 2024 with calculators →| Award | Code | Max | A | B | C | D | E | U |
|---|---|---|---|---|---|---|---|---|
| Chemistry | 8CH0 | 160 | 10566 | 9157 | 7748 | 6339 | 4931 | 00 |