IGCSE Mathematics B (4MB1) grade boundaries — June 2025
Edexcel International GCSE (Pearson) (4MB1). The official grade thresholds for the June 2025 series — the minimum raw mark needed for each grade, by tier and paper combination. Pick the option matching the papers you sat.
Edexcel publishes these as grade threshold tables: "grade thresholds" and "grade boundaries" are two names for the same numbers.
June 2025 at a glance
- A 9 in Mathematics B required 255/300 (85%) on overall (9–1).
- That 9 threshold is 9 marks higher than June 2024 — slightly harder to achieve.
- Across paper variants, the 9 boundary ranged from 237 to 255 marks — variant choice mattered this session.
- A grade 4 needed roughly 25% on overall (9–1).
Overall (9–1)
| Grade | Min mark | Min % |
|---|---|---|
| 9 | 255 | 85% |
| 8 | 216 | 72% |
| 7 | 178 | 60% |
| 6 | 143 | 48% |
| 5 | 108 | 36% |
| 4 | 74 | 25% |
| 3 | 57 | 19% |
Maximum mark: 300.
Overall · variant 2 (9–1)
| Grade | Min mark | Min % |
|---|---|---|
| 9 | 237 | 79% |
| 8 | 196 | 66% |
| 7 | 155 | 52% |
| 6 | 127 | 43% |
| 5 | 99 | 33% |
| 4 | 72 | 24% |
| 3 | 58 | 20% |
Maximum mark: 300.
Calculate your Mathematics B grade →
Figures sourced from the official Edexcel grade threshold tables. Always confirm with your exam board.