Your grade journey
Edexcel A level Biology Bgrade boundaries
Explore official boundaries. See where your marks take you.
9BI03 official seriesMaximum mark 300
Exam series
Flight log / June 2026
Grade boundaries
OfficialAll papers · 01 / 02 / 03 · Out of 300
Grade A*
218
marks / 300
Grade A
189
marks / 300
Grade C
131
marks / 300
Grade E
73
marks / 300
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| A* | 218 | 218–300 | 73% |
| A | 189 | 189–217 | 63% |
| B | 160 | 160–188 | 53% |
| C | 131 | 131–159 | 44% |
| D | 102 | 102–130 | 34% |
| E | 73 | 73–101 | 24% |
| U | Below 73 | ||
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* | A | B | C | D | E |
|---|---|---|---|---|---|---|
| June 2026 | 218+1 | 189+1 | 160 | 131-1 | 102-3 | 73-5 |
| June 2025 | 217+12 | 188+18 | 160+16 | 132+13 | 105+11 | 78+9 |
| June 2024 | 205 | 170 | 144 | 119 | 94 | 69 |
+ 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.
189 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 A level Biology B (9BI0) needed 73 out of 300 on all papers.
What was the boundary for a grade A* in June 2026?
218 out of 300 on all papers — the top grade for A level 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.