Your grade journey
Edexcel AS Biology A (Salters Nuffield)grade boundaries
Explore official boundaries. See where your marks take you.
8BN03 official seriesMaximum mark 160
Exam series
Flight log / June 2026
Grade boundaries
OfficialAll papers · 01 / 02 · Out of 160
Grade A
117
marks / 160
Grade C
89
marks / 160
Grade E
62
marks / 160
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| A | 117 | 117–160 | 73% |
| B | 103 | 103–116 | 64% |
| C | 89 | 89–102 | 56% |
| D | 75 | 75–88 | 47% |
| E | 62 | 62–74 | 39% |
| U | Below 62 | ||
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 | 117+6 | 103+5 | 89+4 | 75+3 | 62+2 |
| June 2025 | 111-5 | 98-4 | 85-3 | 72-3 | 60-2 |
| June 2024 | 116 | 102 | 88 | 75 | 62 |
+ 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.
117 marks needed for Grade A.
Frequently asked questions
What did you need for a grade E in Biology A (Salters Nuffield) in June 2026?
In June 2026, grade E in Pearson Edexcel AS Biology A (Salters Nuffield) (8BN0) needed 62 out of 160 on all papers.
What was the boundary for a grade A in June 2026?
117 out of 160 on all papers — the top grade for AS Biology A (Salters Nuffield) 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.