IGCSE Biology (0610) Grade Thresholds

The minimum marks Cambridge set for each grade in 19 IGCSE Biology 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 165 to 171 out of 200 (83% to 86%) on the Extended options, depending on the option. A grade C needed 104 to 116 out of 200 (52% to 58%) on the Core options and 82 to 97 out of 200 (41% to 49%) 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 165 to 171.

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 104 to 116.

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	165 to 171 out of 200 (83% to 86%)	Core: 104 to 116 out of 200 (52% to 58%) Extended: 82 to 97 out of 200 (41% to 49%)	Cambridge (PDF)
March 2026	171 out of 200 (86%)	Core: 122 out of 200 (61%) Extended: 109 out of 200 (55%)	Cambridge (PDF)
November 2025	162 to 164 out of 200 (81% to 82%)	Core: 111 to 114 out of 200 (56% to 57%) Extended: 89 to 95 out of 200 (45% to 48%)	Cambridge (PDF)
June 2025	156 to 174 out of 200 (78% to 87%)	Core: 112 to 118 out of 200 (56% to 59%) Extended: 75 to 99 out of 200 (38% to 50%)	Cambridge (PDF)
March 2025	162 out of 200 (81%)	Core: 120 out of 200 (60%) Extended: 102 out of 200 (51%)	Cambridge (PDF)
November 2024	152 to 172 out of 200 (76% to 86%)	Core: 109 to 120 out of 200 (55% to 60%) Extended: 89 to 101 out of 200 (45% to 51%)	Cambridge (PDF)
June 2024	157 to 173 out of 200 (79% to 87%)	Core: 113 to 116 out of 200 (57% to 58%) Extended: 79 to 92 out of 200 (40% to 46%)	Cambridge (PDF)
March 2024	161 to 163 out of 200 (81% to 82%)	Core: 115 to 116 out of 200 (58%) Extended: 105 to 106 out of 200 (53%)	Cambridge (PDF)
November 2023	145 to 166 out of 200 (73% to 83%)	Core: 113 to 123 out of 200 (57% to 62%) Extended: 85 to 93 out of 200 (43% to 47%)	Cambridge (PDF)
June 2023	164 to 166 out of 200 (82% to 83%)	Core: 110 to 123 out of 200 (55% to 62%) Extended: 82 to 93 out of 200 (41% to 47%)	Cambridge (PDF)
March 2023	153 out of 200 (77%)	Core: 113 out of 200 (57%) Extended: 94 out of 200 (47%)	Cambridge (PDF)
November 2022	147 to 156 out of 200 (74% to 78%)	Core: 111 to 114 out of 200 (56% to 57%) Extended: 85 to 94 out of 200 (43% to 47%)	Cambridge (PDF)
June 2022	143 to 157 out of 200 (72% to 79%)	Core: 108 to 110 out of 200 (54% to 55%) Extended: 79 to 83 out of 200 (40% to 42%)	Cambridge (PDF)
March 2022	144 out of 200 (72%)	Core: 119 out of 200 (60%) Extended: 88 out of 200 (44%)	Cambridge (PDF)
November 2021	137 to 143 out of 200 (69% to 72%)	Core: 105 to 117 out of 200 (53% to 59%) Extended: 77 to 80 out of 200 (39% to 40%)	Copy (PDF)
June 2021	144 to 147 out of 200 (72% to 74%)	Core: 107 to 108 out of 200 (54%) Extended: 79 to 81 out of 200 (40% to 41%)	Copy (PDF)
March 2021	140 out of 200 (70%)	Core: 113 out of 200 (57%) Extended: 89 out of 200 (45%)	Copy (PDF)
November 2020	151 to 155 out of 200 (76% to 78%)	Core: 114 to 119 out of 200 (57% to 60%) Extended: 83 to 98 out of 200 (42% to 49%)	Copy (PDF)
March 2020	156 to 157 out of 200 (78% to 79%)	Core: 134 to 135 out of 200 (67% to 68%) Extended: 104 to 105 out of 200 (52% to 53%)	Copy (PDF)

No grade threshold table in our files for: 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 0610 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	–	–	–	111	95	80	65	50
–	11, 31, 61	200	–	–	–	112	96	81	67	53
–	12, 32, 52	200	–	–	–	115	101	88	75	62
–	12, 32, 62	200	–	–	–	116	102	88	75	62
–	13, 33, 53	200	–	–	–	104	91	78	63	48
–	13, 33, 63	200	–	–	–	105	91	77	62	47
–	17, 31, 51	200	–	–	–	111	95	80	65	50
–	17, 31, 61	200	–	–	–	112	96	81	67	53
–	21, 41, 51	200	165	137	109	82	72	63	53	43
–	21, 41, 61	200	166	138	110	83	73	64	55	46
–	22, 42, 52	200	167	141	115	89	76	64	53	42
–	22, 42, 62	200	167	141	115	90	77	64	53	42
–	23, 43, 53	200	171	146	121	96	85	74	63	52
–	23, 43, 63	200	169	145	121	97	85	73	62	51
–	27, 41, 51	200	165	137	109	82	72	63	53	43
–	27, 41, 61	200	166	138	110	83	73	64	55	46

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	–	–	–	122	109	97	83	69
–	12, 32, 62	200	–	–	–	122	109	97	83	69
–	22, 42, 52	200	171	150	129	109	94	80	65	50
–	22, 42, 62	200	171	150	129	109	94	80	65	50

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

November 2025: 12 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	162	139	116	94	81	69	57	45
BY	22, 42, 52	200	163	138	113	89	76	63	52	41
BZ	23, 43, 53	200	164	140	116	92	79	66	55	44
CX	21, 41, 61	200	163	140	117	95	82	70	58	46
CY	22, 42, 62	200	164	139	114	89	76	63	52	41
CZ	23, 43, 63	200	163	139	115	92	79	66	55	44
FX	11, 31, 51	200	–	–	–	111	96	81	65	49
FY	12, 32, 52	200	–	–	–	114	99	85	72	59
FZ	13, 33, 53	200	–	–	–	114	98	83	68	53
GX	11, 31, 61	200	–	–	–	112	97	82	66	50
GY	12, 32, 62	200	–	–	–	114	99	85	72	59
GZ	13, 33, 63	200	–	–	–	114	98	83	68	53

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	159	131	103	75	65	56	47	38
BY	22, 42, 52	200	173	148	123	99	85	71	58	45
BZ	23, 43, 53	200	156	131	106	81	69	58	48	38
CX	21, 41, 61	200	160	132	104	76	66	56	48	40
CY	22, 42, 62	200	174	149	124	99	85	71	58	45
CZ	23, 43, 63	200	157	132	107	82	70	59	49	39
FX	11, 31, 51	200	–	–	–	117	101	85	69	53
FY	12, 32, 52	200	–	–	–	113	99	85	72	59
FZ	13, 33, 53	200	–	–	–	112	99	87	75	63
GX	11, 31, 61	200	–	–	–	118	101	85	70	55
GY	12, 32, 62	200	–	–	–	113	99	85	72	59
GZ	13, 33, 63	200	–	–	–	113	100	88	76	64

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	162	142	122	102	88	74	60	46
CY	22, 42, 62	200	162	142	122	102	88	74	60	46
FY	12, 32, 52	200	–	–	–	120	105	90	77	64
GY	12, 32, 62	200	–	–	–	120	105	90	77	64

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

November 2024: 12 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	163	140	117	95	81	68	56	44
BY	22, 42, 52	200	170	147	124	101	87	73	60	47
BZ	23, 43, 53	200	152	131	110	89	78	67	55	43
CX	21, 41, 61	200	164	141	118	96	82	68	56	44
CY	22, 42, 62	200	172	148	124	101	87	73	60	47
CZ	23, 43, 63	200	153	132	111	90	78	67	55	43
FX	11, 31, 51	200	–	–	–	116	101	87	73	59
FY	12, 32, 52	200	–	–	–	120	103	86	69	52
FZ	13, 33, 53	200	–	–	–	109	96	83	68	53
GX	11, 31, 61	200	–	–	–	117	102	87	73	59
GY	12, 32, 62	200	–	–	–	120	103	86	69	52
GZ	13, 33, 63	200	–	–	–	110	96	83	68	53

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	162	134	106	79	69	59	49	39
BY	22, 42, 52	200	173	146	119	92	78	64	51	38
BZ	23, 43, 53	200	157	132	107	83	72	62	50	38
CX	21, 41, 61	200	163	135	107	80	69	59	49	39
CY	22, 42, 62	200	172	145	118	91	77	63	50	37
CZ	23, 43, 63	200	158	133	108	84	73	63	51	39
FX	11, 31, 51	200	–	–	–	115	100	85	68	51
FY	12, 32, 52	200	–	–	–	116	104	92	78	64
GX	11, 31, 61	200	–	–	–	116	100	85	68	51
GY	12, 32, 62	200	–	–	–	115	103	91	77	63
GZ	13, 33, 63	200	–	–	–	113	100	88	75	62

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	161	142	123	105	90	75	58	41
CY	22, 42, 62	200	163	144	125	106	90	75	59	43
FY	12, 32, 52	200	–	–	–	115	102	90	76	62
GY	12, 32, 62	200	–	–	–	116	103	90	77	64

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

November 2023: 12 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	166	141	116	91	77	63	51	39
BY	22, 42, 52	200	161	138	115	93	80	68	56	44
BZ	23, 43, 53	200	145	125	105	85	71	58	45	32
CX	21, 41, 61	200	166	141	116	91	77	63	51	39
CY	22, 42, 62	200	161	138	115	93	80	68	56	44
CZ	23, 43, 63	200	145	125	105	85	71	58	45	32
FX	11, 31, 51	200	–	–	–	118	102	87	73	59
FY	12, 32, 52	200	–	–	–	123	106	89	73	57
FZ	13, 33, 53	200	–	–	–	113	97	81	65	49
GX	11, 31, 61	200	–	–	–	118	102	87	73	59
GY	12, 32, 62	200	–	–	–	123	106	89	73	57
GZ	13, 33, 63	200	–	–	–	113	97	81	65	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	165	137	109	82	69	57	46	35
BY	22, 42, 52	200	164	140	116	93	79	65	51	37
BZ	23, 43, 53	200	164	137	110	84	71	59	48	37
CX	21, 41, 61	200	166	138	110	82	69	57	46	35
CY	22, 42, 62	200	164	140	116	93	79	65	51	37
CZ	23, 43, 63	200	164	137	110	84	71	59	48	37
FX	11, 31, 51	200	–	–	–	123	105	87	68	49
FY	12, 32, 52	200	–	–	–	112	99	86	72	58
GX	11, 31, 61	200	–	–	–	123	105	87	68	49
GY	12, 32, 62	200	–	–	–	112	99	86	72	58
GZ	13, 33, 63	200	–	–	–	110	96	83	69	55

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	153	133	113	94	80	67	54	41
CY	22, 42, 62	200	153	133	113	94	80	67	54	41
FY	12, 32, 52	200	–	–	–	113	97	82	68	54
GY	12, 32, 62	200	–	–	–	113	97	82	68	54

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

November 2022: 12 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	151	130	109	88	75	63	51	39
BY	22, 42, 52	200	154	134	114	94	80	66	52	38
BZ	23, 43, 53	200	147	126	105	85	72	59	46	33
CX	21, 41, 61	200	151	130	109	88	75	63	51	39
CY	22, 42, 62	200	156	135	114	94	80	66	52	38
CZ	23, 43, 63	200	147	126	105	85	72	59	46	33
FX	11, 31, 51	200	–	–	–	114	99	85	71	57
FY	12, 32, 52	200	–	–	–	113	98	83	68	53
FZ	13, 33, 53	200	–	–	–	111	97	83	69	55
GX	11, 31, 61	200	–	–	–	114	99	85	71	57
GY	12, 32, 62	200	–	–	–	113	98	83	68	53
GZ	13, 33, 63	200	–	–	–	111	97	83	69	55

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	156	130	104	79	66	54	42	30
BY	22, 42, 52	200	157	132	107	83	68	54	40	26
BZ	23, 43, 53	200	143	122	101	80	68	57	44	31
CX	21, 41, 61	200	157	131	105	79	66	54	42	30
CY	22, 42, 62	200	157	132	107	83	68	54	40	26
CZ	23, 43, 63	200	143	122	101	80	68	57	44	31
FX	11, 31, 51	200	–	–	–	108	94	81	68	55
FY	12, 32, 52	200	–	–	–	110	94	78	62	46
FZ	13, 33, 53	200	–	–	–	110	95	81	67	53
GX	11, 31, 61	200	–	–	–	108	94	81	68	55
GY	12, 32, 62	200	–	–	–	110	94	78	62	46
GZ	13, 33, 63	200	–	–	–	110	95	81	67	53

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	144	125	106	88	76	64	52	40
CY	22, 42, 62	200	144	125	106	88	76	64	52	40
FY	12, 32, 52	200	–	–	–	119	101	84	67	50
GY	12, 32, 62	200	–	–	–	119	101	84	67	50

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

November 2021: 12 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BX	21, 41, 51	200	140	120	100	80	68	57	46	35
BY	22, 42, 52	200	137	117	97	77	66	55	44	33
BZ	23, 43, 53	200	143	122	101	80	65	51	38	25
CX	21, 41, 61	200	140	120	100	80	68	57	46	35
CY	22, 42, 62	200	137	117	97	77	66	55	44	33
CZ	23, 43, 63	200	143	122	101	80	65	51	38	25
FX	11, 31, 51	200	–	–	–	115	100	86	72	58
FY	12, 32, 52	200	–	–	–	117	101	86	71	56
FZ	13, 33, 53	200	–	–	–	105	88	72	56	40
GX	11, 31, 61	200	–	–	–	115	100	86	72	58
GY	12, 32, 62	200	–	–	–	117	101	86	71	56
GZ	13, 33, 63	200	–	–	–	105	88	72	56	40

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	145	123	101	79	68	57	46	35
BY	22, 42, 52	200	147	125	103	81	69	58	47	36
BZ	23, 43, 53	200	144	122	100	79	68	57	46	35
CX	21, 41, 61	200	145	123	101	79	68	57	46	35
CY	22, 42, 62	200	147	125	103	81	69	58	47	36
CZ	23, 43, 63	200	144	122	100	79	68	57	46	35
FX	11, 31, 51	200	–	–	–	108	91	74	57	40
FY	12, 32, 52	200	–	–	–	108	92	77	61	45
GX	11, 31, 61	200	–	–	–	108	91	74	57	40
GY	12, 32, 62	200	–	–	–	108	92	77	61	45
GZ	13, 33, 63	200	–	–	–	107	92	77	62	47

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	140	123	106	89	75	62	49	36
CY	22, 42, 62	200	140	123	106	89	75	62	49	36
FY	12, 32, 52	200	–	–	–	113	99	85	70	55
GY	12, 32, 62	200	–	–	–	113	99	85	70	55

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	152	129	106	83	70	57	45	33
BY	22, 42, 52	200	154	135	116	97	83	70	57	44
BZ	23, 43, 53	200	151	131	111	91	76	61	48	35
CX	21, 41, 61	200	152	129	106	84	71	58	46	34
CY	22, 42, 62	200	155	136	117	98	84	71	58	45
CZ	23, 43, 63	200	151	131	111	91	76	61	48	35
FY	12, 32, 52	200	–	–	–	118	103	88	73	58
FZ	13, 33, 53	200	–	–	–	117	101	85	71	57
GX	11, 31, 61	200	–	–	–	114	99	84	69	54
GY	12, 32, 62	200	–	–	–	119	104	89	74	59
GZ	13, 33, 63	200	–	–	–	117	101	85	71	57

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

March 2020: 4 options

Option	Components	Out of	A*	A	B	C	D	E	F	G
BY	22, 42, 52	200	156	139	122	105	91	77	62	47
CY	22, 42, 62	200	157	139	121	104	90	77	62	47
FY	12, 32, 52	200	–	–	–	135	121	108	94	80
GY	12, 32, 62	200	–	–	–	134	121	108	94	80

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

Frequently asked questions

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

In June 2026, an A* needed 165 to 171 out of 200 (83% to 86%) on the Extended options, depending on the option (the combination of papers) you were entered for. Across the 19 sessions on this page, the A* threshold ran from 69% to 87% of the marks, so it is worth checking the table for the session you are practising.

Why does one 0610 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 0610 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 Biology: all past papers · Biology hub · how grade thresholds work