AQA A-level Chemistry grade boundaries
In June 2026, A* took 255 of 300 raw marks (85%) on Chemistry Adv. Every published series below, as raw marks or percentages — from AQA's official documents, sources included.
Series — choose any
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What do I need for an A*?
Grade A* is 255 out of 300, 85 percent, for June 2026.
Chemistry Adv
Grade A* = 255/300 (85%)
June 2026
Recent range across selected series: 239–255 marks (79.7–85%)
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 2026latest | June 2025 | June 2024 |
|---|---|---|---|
| A* | 255 | 239 | 239 |
| A | 220 | 197 | 198 |
| B | 181 | 162 | 162 |
| C | 142 | 127 | 126 |
| D | 104 | 93 | 90 |
| E | 66 | 59 | 55 |
| Max mark | 300 | 300 | 300 |
Grade A* boundary over time — Chemistry Adv
Quick answers
What mark is an A* in AQA A-level Chemistry on Chemistry Adv?
In June 2026, A* took 255 of 300 raw marks (85%) 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.
Sources — official board publications
- June 2026aqa.org.uk/files/paCVKfw5La60f7r6i5pOHf/63cb28a7468d750e12f2f8859cba85fbf62213d3.pdfretrieved 2026-09-01
- June 2025aqa.org.uk/…/dbed610cecc941b4d8c16ca921b352797599bf9c.pdfretrieved 2026-07-08
- June 2024aqa.org.uk/…/c795ea20340988cb9a59381a6525b8ef7cf592bb.pdfretrieved 2026-07-08
- November 2021filestore.aqa.org.uk/over/stat_pdf/AQA-A-LEVEL-GDE-BDY-NOV-2021.PDFretrieved 2026-09-07
- November 2020filestore.aqa.org.uk/over/stat_pdf/AQA-A-LEVEL-RL-GDE-BDY-NOV-2020.PDFretrieved 2026-09-07
Close the gap
A few marks off the grade you need?
The gap between grades varies widely by course and series — check the table above for yours. I teach the marks that make the difference. Free intro call, then a free first lesson.