IGCSE Combined Science (0653) grade boundaries — March 2025
Cambridge IGCSE (CAIE) (0653). 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 Combined Science required 154/200 (77%) on extended · papers 22, 42, 52.
- That A* threshold is 1 mark lower than November 2024 — slightly easier to achieve.
- A grade C needed roughly 40% on extended · papers 22, 42, 52.
Extended · Papers 22, 42, 52
| Grade | Min mark | Min % |
|---|---|---|
| A* | 154 | 77% |
| A | 129 | 65% |
| B | 104 | 52% |
| C | 80 | 40% |
| D | 68 | 34% |
| E | 56 | 29% |
| F | 44 | 22% |
| G | 32 | 16% |
Maximum mark: 200.
Extended · Papers 22, 42, 62
| Grade | Min mark | Min % |
|---|---|---|
| A* | 154 | 77% |
| A | 129 | 65% |
| B | 104 | 52% |
| C | 80 | 40% |
| D | 68 | 34% |
| E | 56 | 29% |
| F | 44 | 22% |
| G | 32 | 16% |
Maximum mark: 200.
Core · Papers 12, 32, 52
| Grade | Min mark | Min % |
|---|---|---|
| C | 98 | 49% |
| D | 83 | 42% |
| E | 69 | 35% |
| F | 53 | 27% |
| G | 37 | 19% |
Maximum mark: 200.
Core · Papers 12, 32, 62
| Grade | Min mark | Min % |
|---|---|---|
| C | 98 | 49% |
| D | 83 | 42% |
| E | 69 | 35% |
| F | 53 | 27% |
| G | 37 | 19% |
Maximum mark: 200.
Calculate your Combined Science grade →
Figures sourced from the official Cambridge grade threshold tables. Always confirm with your exam board.