IGCSE Combined Science (0653) grade boundaries — March 2026
Cambridge IGCSE (CAIE) (0653). The official grade thresholds for the March 2026 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 2026 at a glance
- A A* in Combined Science required 147/200 (74%) on extended · papers 22, 42, 52.
- That A* threshold is 4 marks lower than November 2025 — slightly easier to achieve.
- A grade C needed roughly 36% on extended · papers 22, 42, 52.
Core · Papers 12, 32, 52
| Grade | Min mark | Min % |
|---|---|---|
| C | 93 | 47% |
| D | 79 | 40% |
| E | 66 | 33% |
| F | 52 | 26% |
| G | 38 | 19% |
Maximum mark: 200.
Core · Papers 12, 32, 62
| Grade | Min mark | Min % |
|---|---|---|
| C | 93 | 47% |
| D | 79 | 40% |
| E | 66 | 33% |
| F | 52 | 26% |
| G | 38 | 19% |
Maximum mark: 200.
Extended · Papers 22, 42, 52
| Grade | Min mark | Min % |
|---|---|---|
| A* | 147 | 74% |
| A | 122 | 61% |
| B | 97 | 49% |
| C | 72 | 36% |
| D | 62 | 31% |
| E | 52 | 26% |
| F | 43 | 22% |
| G | 34 | 17% |
Maximum mark: 200.
Extended · Papers 22, 42, 62
| Grade | Min mark | Min % |
|---|---|---|
| A* | 147 | 74% |
| A | 122 | 61% |
| B | 97 | 49% |
| C | 72 | 36% |
| D | 62 | 31% |
| E | 52 | 26% |
| F | 43 | 22% |
| G | 34 | 17% |
Maximum mark: 200.
Calculate your Combined Science grade →
Figures sourced from the official Cambridge grade threshold tables. Always confirm with your exam board.