IGCSE Chemistry (4CH1) grade boundaries — June 2026
Edexcel International GCSE (Pearson) (4CH1). 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 Chemistry required 141/180 (79%) on overall (9–1).
- That 9 threshold is 10 marks lower than June 2025 — slightly easier to achieve.
- Across paper variants, the 9 boundary ranged from 141 to 150 marks — variant choice mattered this session.
- A grade 4 needed roughly 37% on overall (9–1).
Overall (9–1)
| Grade | Min mark | Min % |
|---|---|---|
| 9 | 141 | 79% |
| 8 | 122 | 68% |
| 7 | 103 | 58% |
| 6 | 90 | 50% |
| 5 | 78 | 44% |
| 4 | 66 | 37% |
| 3 | 53 | 30% |
| 2 | 41 | 23% |
| 1 | 29 | 17% |
Maximum mark: 180.
Overall · variant 2 (9–1)
| Grade | Min mark | Min % |
|---|---|---|
| 9 | 150 | 84% |
| 8 | 130 | 73% |
| 7 | 111 | 62% |
| 6 | 99 | 56% |
| 5 | 88 | 49% |
| 4 | 77 | 43% |
| 3 | 61 | 34% |
| 2 | 46 | 26% |
| 1 | 31 | 18% |
Maximum mark: 180.
Calculate your Chemistry grade →
Figures sourced from the official Edexcel grade threshold tables. Always confirm with your exam board.