Your grade journey
Edexcel AS Biology Bgrade boundaries
Explore official boundaries. See where your marks take you.
8BI03 official seriesMaximum mark 160
Exam series
Flight log / June 2026
Grade boundaries
OfficialAll papers · 01 / 02 · Out of 160
Grade A
89
marks / 160
Grade C
68
marks / 160
Grade E
48
marks / 160
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| A | 89 | 89–160 | 56% |
| B | 78 | 78–88 | 49% |
| C | 68 | 68–77 | 43% |
| D | 58 | 58–67 | 36% |
| E | 48 | 48–57 | 30% |
| U | Below 48 | ||
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 | 89-3 | 78-3 | 68-2 | 58-2 | 48-2 |
| June 2025 | 92 | 81 | 70 | 60 | 50 |
| June 2024 | 92 | 81 | 70 | 60 | 50 |
+ 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.
89 marks needed for Grade A.
Frequently asked questions
What did you need for a grade E in Biology B in June 2026?
In June 2026, grade E in Pearson Edexcel AS Biology B (8BI0) needed 48 out of 160 on all papers.
What was the boundary for a grade A in June 2026?
89 out of 160 on all papers — the top grade for AS Biology B 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.