What percentage is each grade in IGCSE Chemistry?
Grade boundaries change every session, so percentages aren't fixed. Based on the Edexcel June 2025 boundaries for overall (9–1), here's the percentage needed for each grade in Chemistry (4CH1).
| Grade | Min mark | Min percentage |
|---|---|---|
| 9 | 151/180 | 84% |
| 8 | 134/180 | 75% |
| 7 | 117/180 | 65% |
| 6 | 104/180 | 58% |
| 5 | 91/180 | 51% |
| 4 | 79/180 | 44% |
| 3 | 62/180 | 35% |
| 2 | 45/180 | 25% |
| 1 | 29/180 | 17% |
Overall (9–1) · maximum mark 180 · June 2025.
FAQ
What percentage is a 9 in IGCSE Chemistry?
In June 2025 (Overall (9–1)), a 9 needed about 84% (151/180). Boundaries shift slightly each session.
What percentage is a pass (4) in IGCSE Chemistry?
A grade 4 needed roughly 44% in June 2025. Grade 4 / C is generally treated as a standard pass.
Are these IGCSE Chemistry percentages official?
They are derived from the official Edexcel grade threshold tables. Boundaries are set per session, so use these as a guide and confirm with your exam board.