IGCSE Computer Science (0478) grade boundaries — June 2025
Cambridge IGCSE (CAIE) (0478). The official grade thresholds for the June 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.
June 2025 at a glance
- A A* in Computer Science required 116/150 (78%) on extended · papers 11, 21.
- That A* threshold is 8 marks lower than March 2025 — slightly easier to achieve.
- Across paper variants, the A* boundary ranged from 113 to 123 marks — variant choice mattered this session.
- A grade C needed roughly 34% on extended · papers 11, 21.
Extended · Papers 11, 21
| Grade | Min mark | Min % |
|---|---|---|
| A* | 116 | 78% |
| A | 94 | 63% |
| B | 72 | 48% |
| C | 50 | 34% |
| D | 42 | 29% |
| E | 35 | 24% |
| F | 28 | 19% |
| G | 21 | 15% |
Maximum mark: 150.
Extended · Papers 12, 22
| Grade | Min mark | Min % |
|---|---|---|
| A* | 123 | 82% |
| A | 100 | 67% |
| B | 77 | 52% |
| C | 54 | 36% |
| D | 47 | 32% |
| E | 41 | 28% |
| F | 35 | 24% |
| G | 29 | 20% |
Maximum mark: 150.
Extended · Papers 13, 23
| Grade | Min mark | Min % |
|---|---|---|
| A* | 113 | 76% |
| A | 90 | 60% |
| B | 67 | 45% |
| C | 44 | 30% |
| D | 37 | 25% |
| E | 30 | 20% |
| F | 24 | 16% |
| G | 18 | 12% |
Maximum mark: 150.
Extended · Papers 50
| Grade | Min mark | Min % |
|---|---|---|
| A* | 80 | 89% |
| A | 71 | 79% |
| B | 59 | 66% |
| C | 48 | 54% |
| D | 39 | 44% |
| E | 31 | 35% |
| F | 23 | 26% |
| G | 15 | 17% |
Maximum mark: 90.
Calculate your Computer Science grade →
Figures sourced from the official Cambridge grade threshold tables. Always confirm with your exam board.