IGCSE Chemistry (0620) grade boundaries — November 2025
Cambridge IGCSE (CAIE) (0620). The official grade thresholds for the November 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.
November 2025 at a glance
- A A* in Chemistry required 158/200 (79%) on extended · papers 21, 41, 51.
- That A* threshold is 13 marks lower than June 2025 — slightly easier to achieve.
- Across paper variants, the A* boundary ranged from 153 to 163 marks — variant choice mattered this session.
- A grade C needed roughly 40% on extended · papers 21, 41, 51.
Extended · Papers 21, 41, 51
| Grade | Min mark | Min % |
|---|---|---|
| A* | 158 | 79% |
| A | 132 | 66% |
| B | 106 | 53% |
| C | 80 | 40% |
| D | 67 | 34% |
| E | 54 | 27% |
| F | 43 | 22% |
| G | 32 | 16% |
Maximum mark: 200.
Extended · Papers 22, 42, 52
| Grade | Min mark | Min % |
|---|---|---|
| A* | 153 | 77% |
| A | 127 | 64% |
| B | 101 | 51% |
| C | 76 | 38% |
| D | 63 | 32% |
| E | 50 | 25% |
| F | 39 | 20% |
| G | 28 | 15% |
Maximum mark: 200.
Extended · Papers 23, 43, 53
| Grade | Min mark | Min % |
|---|---|---|
| A* | 163 | 82% |
| A | 137 | 69% |
| B | 111 | 56% |
| C | 85 | 43% |
| D | 72 | 36% |
| E | 60 | 30% |
| F | 49 | 25% |
| G | 38 | 19% |
Maximum mark: 200.
Extended · Papers 21, 41, 61
| Grade | Min mark | Min % |
|---|---|---|
| A* | 159 | 80% |
| A | 133 | 67% |
| B | 107 | 54% |
| C | 82 | 41% |
| D | 69 | 35% |
| E | 56 | 29% |
| F | 45 | 23% |
| G | 34 | 17% |
Maximum mark: 200.
Extended · Papers 22, 42, 62
| Grade | Min mark | Min % |
|---|---|---|
| A* | 153 | 77% |
| A | 127 | 64% |
| B | 101 | 51% |
| C | 76 | 38% |
| D | 63 | 32% |
| E | 51 | 26% |
| F | 40 | 20% |
| G | 29 | 15% |
Maximum mark: 200.
Extended · Papers 23, 43, 63
| Grade | Min mark | Min % |
|---|---|---|
| A* | 163 | 82% |
| A | 137 | 69% |
| B | 111 | 56% |
| C | 86 | 43% |
| D | 73 | 37% |
| E | 61 | 31% |
| F | 50 | 25% |
| G | 39 | 20% |
Maximum mark: 200.
Core · Papers 12, 32, 52
| Grade | Min mark | Min % |
|---|---|---|
| C | 100 | 50% |
| D | 84 | 42% |
| E | 69 | 35% |
| F | 53 | 27% |
| G | 37 | 19% |
Maximum mark: 200.
Core · Papers 13, 33, 53
| Grade | Min mark | Min % |
|---|---|---|
| C | 102 | 51% |
| D | 86 | 43% |
| E | 71 | 36% |
| F | 56 | 29% |
| G | 41 | 21% |
Maximum mark: 200.
Core · Papers 11, 31, 61
| Grade | Min mark | Min % |
|---|---|---|
| C | 105 | 53% |
| D | 89 | 45% |
| E | 73 | 37% |
| F | 58 | 29% |
| G | 43 | 22% |
Maximum mark: 200.
Core · Papers 12, 32, 62
| Grade | Min mark | Min % |
|---|---|---|
| C | 100 | 50% |
| D | 85 | 43% |
| E | 70 | 35% |
| F | 54 | 27% |
| G | 38 | 19% |
Maximum mark: 200.
Core · Papers 13, 33, 63
| Grade | Min mark | Min % |
|---|---|---|
| C | 103 | 52% |
| D | 87 | 44% |
| E | 72 | 36% |
| F | 57 | 29% |
| G | 42 | 21% |
Maximum mark: 200.
Calculate your Chemistry grade →
Figures sourced from the official Cambridge grade threshold tables. Always confirm with your exam board.