What percentage is each grade in IGCSE Chemistry?
Grade boundaries change every session, so percentages aren't fixed. Based on the Cambridge November 2025 boundaries for extended · papers 21, 41, 51, here's the percentage needed for each grade in Chemistry (0620).
| Grade | Min mark | Min percentage |
|---|---|---|
| A* | 158/200 | 79% |
| A | 132/200 | 66% |
| B | 106/200 | 53% |
| C | 80/200 | 40% |
| D | 67/200 | 34% |
| E | 54/200 | 27% |
| F | 43/200 | 22% |
| G | 32/200 | 16% |
Extended · Papers 21, 41, 51 · maximum mark 200 · November 2025.
FAQ
What percentage is a A* in IGCSE Chemistry?
In November 2025 (Extended · Papers 21, 41, 51), a A* needed about 79% (158/200). Boundaries shift slightly each session.
What percentage is a pass (C) in IGCSE Chemistry?
A grade C needed roughly 40% in November 2025. Grade 4 / C is generally treated as a standard pass.
Are these IGCSE Chemistry percentages official?
They are derived from the official Cambridge grade threshold tables. Boundaries are set per session, so use these as a guide and confirm with your exam board.