Grade boundaries
Edexcel International AS and A level Chemistry XCH11/YCH11 grade boundaries October 2025
The least raw mark that reached each grade in October 2025, as Edexcel printed it, for the whole subject and each paper.
From Edexcel’s grade boundaries for October 2025: the board’s document.
| Grade | WCH11/1out of 80 | WCH11/1Aout of 80 | WCH12/2out of 80 | WCH12/2Aout of 80 | WCH13/3out of 50 | WCH13/3Aout of 50 | WCH14/4out of 90 | WCH14/4Aout of 90 | WCH15/5out of 90 | WCH15/5Aout of 90 | WCH16/6out of 50 | WCH16/6Aout of 50 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A* | – | – | – | – | – | – | 70 | 81 | 69 | 69 | 44 | 44 |
| A | 64 | 64 | 60 | 60 | 34 | 34 | 61 | 73 | 62 | 62 | 40 | 40 |
| B | 56 | 56 | 52 | 52 | 29 | 29 | 52 | 64 | 55 | 55 | 36 | 36 |
| C | 48 | 48 | 44 | 44 | 25 | 25 | 43 | 55 | 48 | 48 | 32 | 32 |
| D | 40 | 40 | 36 | 36 | 21 | 21 | 35 | 47 | 41 | 41 | 28 | 28 |
| E | 33 | 33 | 29 | 29 | 17 | 17 | 27 | 39 | 35 | 35 | 25 | 25 |
Marks for each grade
Paper WCH11/1
- 64 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1 was a grade A in October 2025.
- 56 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1 was a grade B in October 2025.
- 48 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1 was a grade C in October 2025.
- 40 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1 was a grade D in October 2025.
- 33 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1 was a grade E in October 2025.
Paper WCH11/1A
- 64 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1A was a grade A in October 2025.
- 56 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1A was a grade B in October 2025.
- 48 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1A was a grade C in October 2025.
- 40 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1A was a grade D in October 2025.
- 33 out of 80 on Edexcel XCH11/YCH11 paper WCH11/1A was a grade E in October 2025.
Paper WCH12/2
- 60 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2 was a grade A in October 2025.
- 52 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2 was a grade B in October 2025.
- 44 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2 was a grade C in October 2025.
- 36 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2 was a grade D in October 2025.
- 29 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2 was a grade E in October 2025.
Paper WCH12/2A
- 60 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2A was a grade A in October 2025.
- 52 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2A was a grade B in October 2025.
- 44 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2A was a grade C in October 2025.
- 36 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2A was a grade D in October 2025.
- 29 out of 80 on Edexcel XCH11/YCH11 paper WCH12/2A was a grade E in October 2025.
Paper WCH13/3
- 34 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3 was a grade A in October 2025.
- 29 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3 was a grade B in October 2025.
- 25 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3 was a grade C in October 2025.
- 21 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3 was a grade D in October 2025.
- 17 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3 was a grade E in October 2025.
Paper WCH13/3A
- 34 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3A was a grade A in October 2025.
- 29 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3A was a grade B in October 2025.
- 25 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3A was a grade C in October 2025.
- 21 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3A was a grade D in October 2025.
- 17 out of 50 on Edexcel XCH11/YCH11 paper WCH13/3A was a grade E in October 2025.
Paper WCH14/4
- 70 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4 was a grade A* in October 2025.
- 61 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4 was a grade A in October 2025.
- 52 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4 was a grade B in October 2025.
- 43 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4 was a grade C in October 2025.
- 35 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4 was a grade D in October 2025.
- 27 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4 was a grade E in October 2025.
Paper WCH14/4A
- 81 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4A was a grade A* in October 2025.
- 73 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4A was a grade A in October 2025.
- 64 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4A was a grade B in October 2025.
- 55 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4A was a grade C in October 2025.
- 47 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4A was a grade D in October 2025.
- 39 out of 90 on Edexcel XCH11/YCH11 paper WCH14/4A was a grade E in October 2025.
Paper WCH15/5
- 69 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5 was a grade A* in October 2025.
- 62 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5 was a grade A in October 2025.
- 55 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5 was a grade B in October 2025.
- 48 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5 was a grade C in October 2025.
- 41 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5 was a grade D in October 2025.
- 35 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5 was a grade E in October 2025.
Paper WCH15/5A
- 69 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5A was a grade A* in October 2025.
- 62 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5A was a grade A in October 2025.
- 55 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5A was a grade B in October 2025.
- 48 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5A was a grade C in October 2025.
- 41 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5A was a grade D in October 2025.
- 35 out of 90 on Edexcel XCH11/YCH11 paper WCH15/5A was a grade E in October 2025.
Paper WCH16/6
- 44 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6 was a grade A* in October 2025.
- 40 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6 was a grade A in October 2025.
- 36 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6 was a grade B in October 2025.
- 32 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6 was a grade C in October 2025.
- 28 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6 was a grade D in October 2025.
- 25 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6 was a grade E in October 2025.
Paper WCH16/6A
- 44 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6A was a grade A* in October 2025.
- 40 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6A was a grade A in October 2025.
- 36 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6A was a grade B in October 2025.
- 32 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6A was a grade C in October 2025.
- 28 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6A was a grade D in October 2025.
- 25 out of 50 on Edexcel XCH11/YCH11 paper WCH16/6A was a grade E in October 2025.