Pearson EdexcelInternational A LevelLatest series: June 2026

Edexcel International A Level Chemistry grade boundaries

In short

Raw-mark grade boundaries for every Chemistry unit of the Pearson Edexcel International A Level, from June 2022 to June 2026. Each unit is converted to a uniform mark scale (UMS); the overall grade comes from the total UMS.

Unit grade boundaries (raw marks)

International A Level units are graded on a uniform mark scale; the figures here are raw-mark boundaries for each unit, as published by Pearson. Use the source document for the conversion to uniform marks. Where a unit has more than one version in a series (for example 1 and 1A), each cell shows the lowest and highest boundary.

WCH11 · Unit 1: Structure, Bonding and Introducttion to Organic Chemistry

Series	Max	A	B	C	D	E
June 2026	80	60	52	44	37	30
January 2026	80	63	55	47	39	32
October 2025	80	64	56	48	40	33
June 2025	80	64	56	48	40	33
January 2025	80	52	45	38	32	26
October 2024	80	55	48	41	34	28

Earlier series (5)

Series	Max	A	B	C	D	E
June 2024	80	57	51	45	39	33
January 2024	80	59	52	45	38	32
October 2023	80	57	50	43	36	29
June 2023	80	58	51	44	37	30
June 2022	80	46	40	34	28	22

WCH12 · Unit 2: Energetics, Group Chemistry, Halogenoalkanes and Alcohol

Series	Max	A	B	C	D	E
January 2026	80	60	52	44	36	29
October 2025	80	60	52	44	36	29
June 2025	80	60	52	44	36	29
January 2025	80	53	45	37	30	23
October 2024	80	54	46	39	32	25
June 2024	80	53–60	46–53	39–46	33–40	27–34

Earlier series (4)

Series	Max	A	B	C	D	E
January 2024	80	52	46	40	35	30
October 2023	80	51	45	39	34	29
June 2023	80	50	44	38	33	28
June 2022	80	48	40	33	26	19

WCH13 · Unit 3: Practical Skills in Chemistry I

Series	Max	A	B	C	D	E
June 2026	50	31–40	27–34	23–28	19–22	16
January 2026	50	35–37	30–32	26–28	22–24	18–20
October 2025	50	34	29	25	21	17
June 2025	50	36	31	27	23	19
January 2025	50	32	27	23	19	15
October 2024	50	29	24	20	16	12

Earlier series (5)

Series	Max	A	B	C	D	E
June 2024	50	30–35	26–30	22–25	18–20	14–16
January 2024	50	33	28	23	19	15
October 2023	50	36	31	26	21	17
June 2023	50	36	31	26	21	17
June 2022	50	27	23	19	15	11

WCH14 · Unit 4: Rates, Equilibria and Further Organic Chemistry

Series	Max	A*	A	B	C	D	E
June 2026	90	69–74	61–66	53–58	45–50	38–42	31–34
January 2026	90	81	72–73	63–64	54–55	46–47	38–39
October 2025	90	70–81	61–73	52–64	43–55	35–47	27–39
June 2025	90	81	72	63	54	46	38
January 2025	90	73	66	59	52	45	39
October 2024	90	70	62	54	46	39	32

Earlier series (5)

Series	Max	A*	A	B	C	D	E
June 2024	90	69	63	57	51	45	39
January 2024	90	74	67	60	53	47	41
October 2023	90	72	65	58	51	44	38
June 2023	90	73	66	59	52	45	39
June 2022	90	73	59	50	41	33	25

WCH15 · Unit 5: Transition Metals and Organic Nitrogen Chemistry

Series	Max	A*	A	B	C	D	E
June 2026	90	77–82	68–74	59–66	51–58	43–51	35–44
January 2026	90	73	66	59	52	45	39
October 2025	90	69	62	55	48	41	35
June 2025	90	73	66	59	52	45	39
January 2025	90	71	65	59	53	47	42
October 2024	90	63	57	51	45	39	33

Earlier series (5)

Series	Max	A*	A	B	C	D	E
June 2024	90	65	59	53	47	42	37
January 2024	90	69	62	55	48	41	35
October 2023	90	69	62	55	48	41	35
June 2023	90	69	62	55	48	41	35
June 2022	90	58	44	37	30	23	17

WCH16 · Unit 6: Practical Skills in Chemistry II

Series	Max	A*	A	B	C	D	E
June 2026	50	36–41	32–37	28–33	25–30	22–27	19–24
January 2026	50	41	37	33	29	26	23
October 2025	50	44	40	36	32	28	25
June 2025	50	39	35	31	27	24	21
January 2025	50	35	30	25	20	16	12
October 2024	50	37	32	27	22	18	14

Earlier series (5)

Series	Max	A*	A	B	C	D	E
June 2024	50	39	36	33	30	27	24
January 2024	50	35	31	27	23	19	16
October 2023	50	36	32	28	24	20	17
June 2023	50	36	32	28	24	20	17
June 2022	50	35	26	22	18	14	10

Sources

Figures from the grade boundary documents published by Pearson. ExaminerPrep is not affiliated with Pearson. Always check the source document for your own series and unit.

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