Your grade journey
Edexcel AS Chemistrygrade boundaries
Explore official boundaries. See where your marks take you.
8CH03 official seriesMaximum mark 160
Exam series
Flight log / June 2026
Grade boundaries
OfficialAll papers · 01 / 02 · Out of 160
Grade A
121
marks / 160
Grade C
88
marks / 160
Grade E
56
marks / 160
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| A | 121 | 121–160 | 76% |
| B | 104 | 104–120 | 65% |
| C | 88 | 88–103 | 55% |
| D | 72 | 72–87 | 45% |
| E | 56 | 56–71 | 35% |
| U | Below 56 | ||
These boundaries apply to this exam series and route. Paper maximums ↗
How these boundaries have changed
All papers, every official series. Boundaries move each year with how hard the papers were.
| Series | A | B | C | D | E |
|---|---|---|---|---|---|
| June 2026 | 121+15 | 104+12 | 88+10 | 72+8 | 56+5 |
| June 2025 | 106+1 | 92+1 | 78+1 | 64+1 | 51+2 |
| June 2024 | 105 | 91 | 77 | 63 | 49 |
+ higher than the same series a year earlier (harder to reach) · − lower (easier to reach).
Grade calculator
June 2026 · All papers
Enter your mark for each paper to see your grade.
121 marks needed for Grade A.
Frequently asked questions
What did you need for a grade E in Chemistry in June 2026?
In June 2026, grade E in Pearson Edexcel AS Chemistry (8CH0) needed 56 out of 160 on all papers.
What was the boundary for a grade A in June 2026?
121 out of 160 on all papers — the top grade for AS Chemistry in June 2026.
How is my grade worked out?
Your marks from each paper are added up (scaled by a weighting factor where papers count differently) to give your subject mark, which is then compared with the boundaries. Your grade comes from the total — not from each paper separately.
When will the next boundaries be published?
Pearson Edexcel publishes grade boundaries on results day for each series. Until then, any figures shown for a future series are Starley estimates, clearly labelled, based on recent years.