IGCSE Mathematics B (4MB1) grade boundaries — June 2026
Edexcel International GCSE (Pearson) (4MB1). The official grade thresholds for the June 2026 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 2026 at a glance
- A 9 in Mathematics B required 246/300 (82%) on overall (9–1).
- That 9 threshold is 9 marks lower than June 2025 — slightly easier to achieve.
- Across paper variants, the 9 boundary ranged from 246 to 262 marks — variant choice mattered this session.
- A grade 4 needed roughly 28% on overall (9–1).
Overall (9–1)
| Grade | Min mark | Min % |
|---|---|---|
| 9 | 246 | 82% |
| 8 | 209 | 70% |
| 7 | 173 | 58% |
| 6 | 142 | 48% |
| 5 | 112 | 38% |
| 4 | 82 | 28% |
| 3 | 67 | 23% |
Maximum mark: 300.
Overall · variant 2 (9–1)
| Grade | Min mark | Min % |
|---|---|---|
| 9 | 262 | 88% |
| 8 | 223 | 75% |
| 7 | 185 | 62% |
| 6 | 154 | 52% |
| 5 | 124 | 42% |
| 4 | 94 | 32% |
| 3 | 79 | 27% |
Maximum mark: 300.
Calculate your Mathematics B grade →
Figures sourced from the official Edexcel grade threshold tables. Always confirm with your exam board.