Your grade journey
Edexcel International GCSE Human Biologygrade boundaries
Explore official boundaries. See where your marks take you.
4HB12 official seriesMaximum mark 180
Exam series
Papers
Flight log / June 2026
Grade boundaries
OfficialPapers 01 02 · Out of 180
Grade 9
156
marks / 180
Grade 7
131
marks / 180
Grade 5
103
marks / 180
Grade 4
89
marks / 180
All grade thresholds
| Grade | Minimum mark | Mark range | % of maximum |
|---|---|---|---|
| 9 | 156 | 156–180 | 87% |
| 8 | 143 | 143–155 | 79% |
| 7 | 131 | 131–142 | 73% |
| 6 | 117 | 117–130 | 65% |
| 5 | 103 | 103–116 | 57% |
| 4 | 89 | 89–102 | 49% |
| 3 | 71 | 71–88 | 39% |
| 2 | 53 | 53–70 | 29% |
| 1 | 36 | 36–52 | 20% |
| U | Below 36 | ||
These boundaries apply to this exam series and route. Paper maximums ↗
How these boundaries have changed
Papers 01 02, every official series. Boundaries move each year with how hard the papers were.
| Series | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
|---|---|---|---|---|---|---|---|---|---|
| June 2026 | 156+4 | 143+4 | 131+4 | 117+4 | 103+4 | 89+4 | 71+5 | 53+6 | 36+8 |
| June 2025 | 152 | 139 | 127 | 113 | 99 | 85 | 66 | 47 | 28 |
+ higher than the same series a year earlier (harder to reach) · − lower (easier to reach).
Grade calculator
June 2026 · Papers 01 02
Enter your mark for each paper to see your grade.
131 marks needed for Grade 7.
Frequently asked questions
What did you need for a grade 4 in Human Biology in June 2026?
In June 2026, grade 4 in Pearson Edexcel International GCSE Human Biology (4HB1) needed 89 out of 180 on papers 01 02; 92 out of 180 on papers 01r 02r.
What was the boundary for a grade 9 in June 2026?
156 out of 180 on papers 01 02; 160 out of 180 on papers 01r 02r — the top grade for International GCSE Human Biology 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.