IGCSE Chemistry (0620) grade boundaries — March 2025
Cambridge IGCSE (CAIE) (0620). The official grade thresholds for the March 2025 series — the minimum raw mark needed for each grade, by tier and paper combination. Pick the option matching the papers you sat.
Cambridge publishes these as grade threshold tables: "grade thresholds" and "grade boundaries" are two names for the same numbers.
March 2025 at a glance
- A A* in Chemistry required 176/200 (88%) on extended · papers 22, 42, 52.
- That A* threshold is 10 marks higher than June 2024 — slightly harder to achieve.
- Across paper variants, the A* boundary ranged from 176 to 177 marks — variant choice mattered this session.
- A grade C needed roughly 49% on extended · papers 22, 42, 52.
Extended · Papers 22, 42, 52
| Grade | Min mark | Min % |
|---|---|---|
| A* | 176 | 88% |
| A | 153 | 77% |
| B | 125 | 63% |
| C | 98 | 49% |
| D | 85 | 43% |
| E | 73 | 37% |
| F | 59 | 30% |
| G | 45 | 23% |
Maximum mark: 200.
Extended · Papers 22, 42, 62
| Grade | Min mark | Min % |
|---|---|---|
| A* | 177 | 89% |
| A | 154 | 77% |
| B | 126 | 63% |
| C | 99 | 50% |
| D | 85 | 43% |
| E | 72 | 36% |
| F | 58 | 29% |
| G | 44 | 22% |
Maximum mark: 200.
Core · Papers 12, 32, 52
| Grade | Min mark | Min % |
|---|---|---|
| C | 113 | 57% |
| D | 97 | 49% |
| E | 82 | 41% |
| F | 65 | 33% |
| G | 48 | 24% |
Maximum mark: 200.
Core · Papers 12, 32, 62
| Grade | Min mark | Min % |
|---|---|---|
| C | 114 | 57% |
| D | 97 | 49% |
| E | 81 | 41% |
| F | 64 | 32% |
| G | 47 | 24% |
Maximum mark: 200.
Calculate your Chemistry grade →
Figures sourced from the official Cambridge grade threshold tables. Always confirm with your exam board.