AQA A-level Chemistry grade boundaries
In June 2025, A* took 239/300 (79.7%). Every published series below, as raw marks or percentages — from AQA's official documents, sources included.
What do I need for a A*?
Chemistry Adv
Grade A* = 239/300 (79.7%)
June 2025
Recent range across selected series: 239–239 marks (79.7–79.7%)
Boundaries move every series — aim a comfortable margin above the recent range, not at the boundary itself.
What grade is my mark?
Boundaries are set fresh every series and move year to year — treat these as a guide to the difficulty band, not a promise.
| Grade | June 2025latest | June 2024 |
|---|---|---|
| A* | 239 | 239 |
| A | 197 | 198 |
| B | 162 | 162 |
| C | 127 | 126 |
| D | 93 | 90 |
| E | 59 | 55 |
| Max mark | 300 | 300 |
Sources — official board publications
- June 2025aqa.org.uk/files/4d13b8d4-a73a-42f9-8ae8-39e54da13200/dbed610cecc941b4…retrieved 2026-07-08
- June 2024aqa.org.uk/files/332be86c-d21f-4769-9a42-df18b3ec13ea/c795ea20340988cb…retrieved 2026-07-08
Quick answers
What mark is an A* in AQA A-level Chemistry?
In June 2025, A* took 239 of 300 raw marks (79.7%) on Chemistry Adv. It moves every series — see the table for the recent range.
Why do grade boundaries change every year?
Boundaries are set after marking so that a grade reflects the same standard even when the paper is harder or easier. A hard paper gets lower boundaries; an easy one, higher. That's why revising to 'the boundary' is a trap — aim above the recent range.
Where does this data come from?
Every row is taken from AQA's official grade-boundary publications — the exact source document and retrieval date are listed under the table. Series the board hasn't published simply aren't shown.
Close the gap
A few marks off the grade you need?
The distance between grades is usually 8–12 marks of technique, not talent. I teach exactly those marks — first lesson free.