IGCSE Chemistry (0620) Grade Thresholds

The minimum marks Cambridge set for each grade in 18 IGCSE Chemistry sessions from 2020 to 2026, taken from Cambridge's grade threshold table for each session. Every table is linked, so you can check any number against the source: from March 2022 the links go to Cambridge's own PDFs; for 2020 and 2021, which Cambridge no longer lists, to copies of the same tables.

Latest: June 2026

An A* needed 168 to 175 out of 200 (84% to 88%) on the Extended options, depending on the option. A grade C needed 105 to 108 out of 200 (53% to 54%) on the Core options and 79 to 93 out of 200 (40% to 47%) on the Extended options.

Where each grade starts on one Extended option: components 21, 41, 51, out of 200. Across all 8 Extended options in June 2026, an A* needed 168 to 175.

Where each grade starts on one Core option: components 11, 31, 51, out of 200. Core options are graded C to G. Across all 8 Core options, a C needed 105 to 108.

Source: Cambridge grade threshold table, June 2026 (PDF) · June 2026 papers

How the A* threshold has moved

The mark needed for an A*, as a percentage of the maximum, in each session in our files. Where options differed, the bar runs from the lowest to the highest. Core options, which do not award an A*, are not included.

M = March, J = June, N = November. Sessions with no grade threshold table in our files are left out. Every number is in the table below.

A* and C thresholds by session

Session	A*	C	Source
June 2026	168 to 175 out of 200 (84% to 88%)	Core: 105 to 108 out of 200 (53% to 54%) Extended: 79 to 93 out of 200 (40% to 47%)	Cambridge (PDF)
March 2026	171 to 172 out of 200 (86%)	Core: 107 to 111 out of 200 (54% to 56%) Extended: 85 to 89 out of 200 (43% to 45%)	Cambridge (PDF)
November 2025	153 to 163 out of 200 (77% to 82%)	Core: 100 to 105 out of 200 (50% to 53%) Extended: 76 to 86 out of 200 (38% to 43%)	Cambridge (PDF)
June 2025	171 to 173 out of 200 (86% to 87%)	Core: 106 to 111 out of 200 (53% to 56%) Extended: 88 to 89 out of 200 (44% to 45%)	Cambridge (PDF)
March 2025	176 to 177 out of 200 (88% to 89%)	Core: 113 to 114 out of 200 (57%) Extended: 98 to 99 out of 200 (49% to 50%)	Cambridge (PDF)
November 2024	155 to 158 out of 200 (78% to 79%)	Core: 107 to 109 out of 200 (54% to 55%) Extended: 82 to 85 out of 200 (41% to 43%)	Cambridge (PDF)
June 2024	160 to 170 out of 200 (80% to 85%)	Core: 102 to 106 out of 200 (51% to 53%) Extended: 76 to 79 out of 200 (38% to 40%)	Cambridge (PDF)
March 2024	162 to 164 out of 200 (81% to 82%)	Core: 106 out of 200 (53%) Extended: 81 out of 200 (41%)	Cambridge (PDF)
November 2023	148 to 156 out of 200 (74% to 78%)	Core: 106 to 108 out of 200 (53% to 54%) Extended: 79 to 88 out of 200 (40% to 44%)	Cambridge (PDF)
June 2023	154 to 161 out of 200 (77% to 81%)	Core: 95 to 101 out of 200 (48% to 51%) Extended: 67 to 72 out of 200 (34% to 36%)	Cambridge (PDF)
March 2023	157 to 158 out of 200 (79%)	Core: 108 to 110 out of 200 (54% to 55%) Extended: 89 to 91 out of 200 (45% to 46%)	Cambridge (PDF)
November 2022	149 to 153 out of 200 (75% to 77%)	Core: 104 to 110 out of 200 (52% to 55%) Extended: 82 to 88 out of 200 (41% to 44%)	Cambridge (PDF)
June 2022	141 to 159 out of 200 (71% to 80%)	Core: 102 to 107 out of 200 (51% to 54%) Extended: 64 to 73 out of 200 (32% to 37%)	Cambridge (PDF)
March 2022	142 to 143 out of 200 (71% to 72%)	Core: 102 to 103 out of 200 (51% to 52%) Extended: 70 to 71 out of 200 (35% to 36%)	Cambridge (PDF)
November 2021	136 to 142 out of 200 (68% to 71%)	Core: 104 to 107 out of 200 (52% to 54%) Extended: 70 to 77 out of 200 (35% to 39%)	Copy (PDF)
June 2021	140 to 145 out of 200 (70% to 73%)	Core: 92 to 95 out of 200 (46% to 48%) Extended: 63 to 67 out of 200 (32% to 34%)	Copy (PDF)
March 2021	141 to 143 out of 200 (71% to 72%)	Core: 96 out of 200 (48%) Extended: 72 out of 200 (36%)	Copy (PDF)
November 2020	138 to 154 out of 200 (69% to 77%)	Core: 106 to 110 out of 200 (53% to 55%) Extended: 72 to 89 out of 200 (36% to 45%)	Copy (PDF)

No grade threshold table in our files for: March 2020, May/June 2020.

How to read these tables

Your grade comes from your total mark across the papers you sat, after Cambridge's weighting. Each option is one combination of papers, written as component codes: for most components the first digit is the paper and the second is the variant, so 12 is Paper 1, Variant 2 (a few, mostly in the English tables, use other codes). Schools in different administrative zones sit different variants, which is why one session has several rows. Use the row with your components; your exams officer can tell you which ones you were entered for.

Cambridge sets the thresholds after marking, aiming to keep each grade as hard to reach as it was the year before, so they move from session to session.

A dash means that grade is not available on that option (for example, Core options go no higher than C).

From 2026 Cambridge's tables list each combination of components without an option code, so the Option column shows a dash for those sessions.

Cambridge's tables also list a 90-mark option made only of component 50 (with component 60 in some English tables). It is not one of the 0620 papers in the syllabus, so it is left out here. The linked PDF always has the full table.

Every session's thresholds

June 2026: 16 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
–	11, 31, 51	200	–	–	–	105	88	72	55	38
–	11, 31, 61	200	–	–	–	107	90	73	56	39
–	12, 32, 52	200	–	–	–	107	89	71	53	35
–	12, 32, 62	200	–	–	–	108	89	71	53	35
–	13, 33, 53	200	–	–	–	106	89	72	56	40
–	13, 33, 63	200	–	–	–	107	90	73	57	41
–	17, 31, 51	200	–	–	–	105	88	72	55	38
–	17, 31, 61	200	–	–	–	107	90	73	56	39
–	21, 41, 51	200	173	147	119	91	78	66	53	40
–	21, 41, 61	200	175	150	121	93	80	67	54	41
–	22, 42, 52	200	168	138	108	79	68	57	46	35
–	22, 42, 62	200	169	139	109	80	68	57	46	35
–	23, 43, 53	200	172	144	116	89	76	64	53	42
–	23, 43, 63	200	172	145	117	90	77	65	54	43
–	27, 41, 51	200	173	147	119	91	78	66	53	40
–	27, 41, 61	200	175	150	121	93	80	67	54	41

Source: Cambridge grade threshold table, June 2026 (PDF) · June 2026 papers and mark schemes

March 2026: 4 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
–	12, 32, 52	200	–	–	–	107	91	75	59	43
–	12, 32, 62	200	–	–	–	111	94	78	62	46
–	22, 42, 52	200	171	142	113	85	74	63	51	39
–	22, 42, 62	200	172	145	117	89	77	66	54	42

Source: Cambridge grade threshold table, March 2026 (PDF) · March 2026 papers and mark schemes

November 2025: 11 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	158	132	106	80	67	54	43	32
BY	22, 42, 52	200	153	127	101	76	63	50	39	28
BZ	23, 43, 53	200	163	137	111	85	72	60	49	38
CX	21, 41, 61	200	159	133	107	82	69	56	45	34
CY	22, 42, 62	200	153	127	101	76	63	51	40	29
CZ	23, 43, 63	200	163	137	111	86	73	61	50	39
FY	12, 32, 52	200	–	–	–	100	84	69	53	37
FZ	13, 33, 53	200	–	–	–	102	86	71	56	41
GX	11, 31, 61	200	–	–	–	105	89	73	58	43
GY	12, 32, 62	200	–	–	–	100	85	70	54	38
GZ	13, 33, 63	200	–	–	–	103	87	72	57	42

Source: Cambridge grade threshold table, November 2025 (PDF) · November 2025 papers and mark schemes

June 2025: 12 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	171	143	115	88	76	65	53	41
BY	22, 42, 52	200	172	145	116	88	77	66	54	42
BZ	23, 43, 53	200	173	146	117	88	75	63	52	41
CX	21, 41, 61	200	172	145	116	88	76	65	54	43
CY	22, 42, 62	200	173	146	117	89	78	67	55	43
CZ	23, 43, 63	200	173	147	118	89	77	66	55	44
FX	11, 31, 51	200	–	–	–	106	88	71	53	35
FY	12, 32, 52	200	–	–	–	109	93	78	61	44
FZ	13, 33, 53	200	–	–	–	110	92	74	56	38
GX	11, 31, 61	200	–	–	–	106	88	71	54	37
GY	12, 32, 62	200	–	–	–	110	94	79	62	45
GZ	13, 33, 63	200	–	–	–	111	94	77	59	41

Source: Cambridge grade threshold table, June 2025 (PDF) · June 2025 papers and mark schemes

March 2025: 4 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BY	22, 42, 52	200	176	153	125	98	85	73	59	45
CY	22, 42, 62	200	177	154	126	99	85	72	58	44
FY	12, 32, 52	200	–	–	–	113	97	82	65	48
GY	12, 32, 62	200	–	–	–	114	97	81	64	47

Source: Cambridge grade threshold table, March 2025 (PDF) · March 2025 papers and mark schemes

November 2024: 10 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BY	22, 42, 52	200	156	131	106	82	70	58	47	36
BZ	23, 43, 53	200	155	131	107	83	72	61	51	41
CX	21, 41, 61	200	158	133	108	84	71	59	47	35
CY	22, 42, 62	200	158	133	108	84	71	59	47	35
CZ	23, 43, 63	200	157	133	109	85	73	61	50	39
FY	12, 32, 52	200	–	–	–	107	91	76	62	48
FZ	13, 33, 53	200	–	–	–	107	92	77	64	51
GX	11, 31, 61	200	–	–	–	109	94	79	63	47
GY	12, 32, 62	200	–	–	–	109	93	77	62	47
GZ	13, 33, 63	200	–	–	–	109	93	77	63	49

Source: Cambridge grade threshold table, November 2024 (PDF) · November 2024 papers and mark schemes

June 2024: 11 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	164	135	106	78	67	57	46	35
BY	22, 42, 52	200	166	137	108	79	67	56	45	34
BZ	23, 43, 53	200	160	132	104	76	67	58	47	36
CX	21, 41, 61	200	167	137	107	78	67	57	47	37
CY	22, 42, 62	200	170	141	110	79	68	58	48	38
CZ	23, 43, 63	200	163	134	105	76	67	58	48	38
FX	11, 31, 51	200	–	–	–	106	89	72	55	38
FY	12, 32, 52	200	–	–	–	102	85	69	53	37
GX	11, 31, 61	200	–	–	–	106	89	72	56	40
GY	12, 32, 62	200	–	–	–	102	86	71	56	41
GZ	13, 33, 63	200	–	–	–	106	89	72	56	40

Source: Cambridge grade threshold table, June 2024 (PDF) · June 2024 papers and mark schemes

March 2024: 4 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BY	22, 42, 52	200	162	135	108	81	69	57	46	35
CY	22, 42, 62	200	164	136	108	81	69	57	46	35
FY	12, 32, 52	200	–	–	–	106	92	78	64	50
GY	12, 32, 62	200	–	–	–	106	92	78	64	50

Source: Cambridge grade threshold table, March 2024 (PDF) · March 2024 papers and mark schemes

November 2023: 10 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BY	22, 42, 52	200	148	125	102	79	68	57	46	35
BZ	23, 43, 53	200	154	131	108	86	75	65	55	45
CX	21, 41, 61	200	153	128	103	79	67	56	45	34
CY	22, 42, 62	200	149	126	103	80	69	58	46	34
CZ	23, 43, 63	200	156	133	110	88	76	65	54	43
FY	12, 32, 52	200	–	–	–	107	92	77	63	49
FZ	13, 33, 53	200	–	–	–	106	91	77	64	51
GX	11, 31, 61	200	–	–	–	107	92	77	63	49
GY	12, 32, 62	200	–	–	–	108	93	78	63	48
GZ	13, 33, 63	200	–	–	–	108	92	77	63	49

Source: Cambridge grade threshold table, November 2023 (PDF) · November 2023 papers and mark schemes

June 2023: 11 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	158	129	100	71	61	51	41	31
BY	22, 42, 52	200	154	125	96	67	58	49	41	33
BZ	23, 43, 53	200	155	126	97	68	58	48	40	32
CX	21, 41, 61	200	161	131	101	72	61	51	42	33
CY	22, 42, 62	200	157	128	99	70	61	52	44	36
CZ	23, 43, 63	200	159	129	99	70	60	51	43	35
FX	11, 31, 51	200	–	–	–	95	79	63	47	31
FY	12, 32, 52	200	–	–	–	98	81	65	50	35
GX	11, 31, 61	200	–	–	–	96	79	63	48	33
GY	12, 32, 62	200	–	–	–	101	84	68	53	38
GZ	13, 33, 63	200	–	–	–	101	84	68	52	36

Source: Cambridge grade threshold table, June 2023 (PDF) · June 2023 papers and mark schemes

March 2023: 4 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BY	22, 42, 52	200	158	135	112	89	74	60	47	34
CY	22, 42, 62	200	157	135	113	91	76	62	49	36
FY	12, 32, 52	200	–	–	–	108	92	77	61	45
GY	12, 32, 62	200	–	–	–	110	94	79	63	47

Source: Cambridge grade threshold table, March 2023 (PDF) · March 2023 papers and mark schemes

November 2022: 11 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	150	127	104	82	70	59	48	37
BY	22, 42, 52	200	150	127	104	82	70	59	48	37
BZ	23, 43, 53	200	152	130	108	86	74	62	50	38
CX	21, 41, 61	200	149	127	105	83	71	59	47	35
CY	22, 42, 62	200	151	128	105	82	70	58	46	34
CZ	23, 43, 63	200	153	131	109	88	75	62	49	36
FY	12, 32, 52	200	–	–	–	108	93	78	64	50
FZ	13, 33, 53	200	–	–	–	108	93	79	64	49
GX	11, 31, 61	200	–	–	–	104	90	76	62	48
GY	12, 32, 62	200	–	–	–	108	92	77	62	47
GZ	13, 33, 63	200	–	–	–	110	94	79	63	47

Source: Cambridge grade threshold table, November 2022 (PDF) · November 2022 papers and mark schemes

June 2022: 12 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	157	129	101	73	62	52	42	32
BY	22, 42, 52	200	141	115	89	64	55	46	37	28
BZ	23, 43, 53	200	147	120	93	67	57	48	39	30
CX	21, 41, 61	200	159	130	101	72	61	51	41	31
CY	22, 42, 62	200	145	118	91	65	55	46	37	28
CZ	23, 43, 63	200	146	119	92	65	55	46	37	28
FX	11, 31, 51	200	–	–	–	107	90	73	56	39
FY	12, 32, 52	200	–	–	–	103	86	69	53	37
FZ	13, 33, 53	200	–	–	–	104	87	71	56	41
GX	11, 31, 61	200	–	–	–	106	89	72	55	38
GY	12, 32, 62	200	–	–	–	104	86	69	53	37
GZ	13, 33, 63	200	–	–	–	102	85	69	54	39

Source: Cambridge grade threshold table, June 2022 (PDF) · June 2022 papers and mark schemes

March 2022: 4 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BY	22, 42, 52	200	142	118	94	70	58	46	35	24
CY	22, 42, 62	200	143	119	95	71	58	46	35	24
FY	12, 32, 52	200	–	–	–	102	84	67	48	29
GY	12, 32, 62	200	–	–	–	103	85	67	48	29

Source: Cambridge grade threshold table, March 2022 (PDF) · March 2022 papers and mark schemes

November 2021: 11 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	136	114	92	71	62	53	43	33
BY	22, 42, 52	200	138	116	94	73	62	51	42	33
BZ	23, 43, 53	200	142	120	98	77	66	55	46	37
CX	21, 41, 61	200	136	114	92	70	61	52	43	34
CY	22, 42, 62	200	138	116	94	72	61	50	41	32
CZ	23, 43, 63	200	142	120	98	76	65	55	46	37
FY	12, 32, 52	200	–	–	–	107	93	80	66	52
FZ	13, 33, 53	200	–	–	–	106	91	77	62	47
GX	11, 31, 61	200	–	–	–	104	90	77	65	53
GY	12, 32, 62	200	–	–	–	106	92	79	65	51
GZ	13, 33, 63	200	–	–	–	105	91	77	62	47

Source: copy of the Cambridge grade threshold table, November 2021 (PDF) · November 2021 papers and mark schemes

June 2021: 11 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	141	116	91	67	56	46	37	28
BY	22, 42, 52	200	143	116	89	63	53	44	36	28
BZ	23, 43, 53	200	140	114	88	63	54	46	39	32
CX	21, 41, 61	200	142	117	92	67	57	47	38	29
CY	22, 42, 62	200	145	118	91	64	54	44	36	28
CZ	23, 43, 63	200	141	115	89	64	56	48	41	34
FX	11, 31, 51	200	–	–	–	92	76	61	46	31
FY	12, 32, 52	200	–	–	–	94	79	65	49	33
GX	11, 31, 61	200	–	–	–	92	77	62	47	32
GY	12, 32, 62	200	–	–	–	95	80	65	49	33
GZ	13, 33, 63	200	–	–	–	93	78	63	48	33

Source: copy of the Cambridge grade threshold table, June 2021 (PDF) · June 2021 papers and mark schemes

March 2021: 4 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BY	22, 42, 52	200	141	118	95	72	62	52	42	32
CY	22, 42, 62	200	143	119	95	72	62	52	42	32
FY	12, 32, 52	200	–	–	–	96	79	62	45	28
GY	12, 32, 62	200	–	–	–	96	79	62	45	28

Source: copy of the Cambridge grade threshold table, March 2021 (PDF) · March 2021 papers and mark schemes

November 2020: 11 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	153	130	107	84	70	57	44	31
BY	22, 42, 52	200	138	116	94	72	61	51	40	29
BZ	23, 43, 53	200	152	131	110	89	76	63	50	37
CX	21, 41, 61	200	154	130	106	83	69	56	43	30
CY	22, 42, 62	200	140	118	96	74	62	51	40	29
CZ	23, 43, 63	200	152	131	110	89	76	63	50	37
FY	12, 32, 52	200	–	–	–	108	92	76	60	44
FZ	13, 33, 53	200	–	–	–	106	90	74	58	42
GX	11, 31, 61	200	–	–	–	106	90	74	58	42
GY	12, 32, 62	200	–	–	–	110	93	76	60	44
GZ	13, 33, 63	200	–	–	–	106	90	74	58	42

Source: copy of the Cambridge grade threshold table, November 2020 (PDF) · November 2020 papers and mark schemes

Frequently asked questions

How many marks do you need for an A* in IGCSE Chemistry?

In June 2026, an A* needed 168 to 175 out of 200 (84% to 88%) on the Extended options, depending on the option (the combination of papers) you were entered for. Across the 18 sessions on this page, the A* threshold ran from 68% to 89% of the marks, so it is worth checking the table for the session you are practising.

Why does one 0620 session have several grade thresholds?

Cambridge sets a threshold for each option, and each option is a different combination of papers and variants. Schools in different administrative zones sit different variants, so use the row that matches the papers you sat. Your exams officer can tell you which components you were entered for.

Where do these 0620 grade thresholds come from?

From Cambridge International's grade threshold table for each session, linked next to every session on this page. Cambridge publishes grade thresholds after each exam series on its grade threshold tables page.

Official source: Cambridge IGCSE grade threshold tables. If a number here ever differs from the table your school received, the school's copy is the one that counts, so ask your exams officer.

More for Chemistry: all past papers · Chemistry hub · how grade thresholds work