IGCSE Human Biology grade boundaries — June 2025
Edexcel International GCSE (Pearson) (4HB1). Minimum raw marks for each grade in the June 2025 series, by tier and paper combination. Pick the option matching the papers you sat.
June 2025 at a glance
- A 9 in Human Biology required 152/180 (85%) on overall (9–1).
- That 9 threshold is unchanged from June 2024.
- Across paper variants, the 9 boundary ranged from 152 to 156 marks — variant choice mattered this session.
- A grade 4 needed roughly 48% on overall (9–1).
Overall (9–1)
| Grade | Min mark | Min % |
|---|---|---|
| 9 | 152 | 85% |
| 8 | 139 | 78% |
| 7 | 127 | 71% |
| 6 | 113 | 63% |
| 5 | 99 | 56% |
| 4 | 85 | 48% |
| 3 | 66 | 37% |
| 2 | 47 | 27% |
| 1 | 28 | 16% |
Maximum mark: 180.
Overall · variant 2 (9–1)
| Grade | Min mark | Min % |
|---|---|---|
| 9 | 156 | 87% |
| 8 | 143 | 80% |
| 7 | 131 | 73% |
| 6 | 117 | 65% |
| 5 | 103 | 58% |
| 4 | 89 | 50% |
| 3 | 70 | 39% |
| 2 | 51 | 29% |
| 1 | 32 | 18% |
Maximum mark: 180.
Calculate your Human Biology grade →
Figures sourced from the official Edexcel grade threshold tables. Always confirm with your exam board.