IGCSE Computer Science grade boundaries — June 2025
Cambridge IGCSE (CAIE) (0478). Minimum raw marks for each grade in the June 2025 series, by tier and paper combination. Pick the option matching the papers you sat.
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.