Grade boundaries

Edexcel A-level Biology B 9BI0 grade boundaries

The newest summer series is shown first. Type a mark to see its grade, or choose another tier, series or paper.

Level

Subject

Board

Course

Boundaries

Whole subject or paper

Mark

Out of

Type a mark to see its grade.

The boundaries

June 2026 · whole subject

Grade	Needs
A*	218 of 300
A	189 of 300
B	160 of 300
C	131 of 300
D	102 of 300
E	73 of 300

Every course·Mock grade calculator

Marks for each grade in June 2026

In total

218 out of 300 on Edexcel 9BI0 in total was a grade A* in June 2026.
189 out of 300 on Edexcel 9BI0 in total was a grade A in June 2026.
160 out of 300 on Edexcel 9BI0 in total was a grade B in June 2026.
131 out of 300 on Edexcel 9BI0 in total was a grade C in June 2026.
102 out of 300 on Edexcel 9BI0 in total was a grade D in June 2026.
73 out of 300 on Edexcel 9BI0 in total was a grade E in June 2026.

Every paper in June 2026

Every series

10 series, newest first. Each mark is the least that reaches the grade, out of the total under the column’s name.

June 2026

From Edexcel’s grade boundaries for June 2026: the board’s document.

Grade	Whole subjectout of 300	9BI0/01out of 90	9BI0/02out of 90	9BI0/03out of 120
A*	218	60	75	83
A	189	52	65	72
B	160	44	55	60
C	131	36	45	48
D	102	28	35	37
E	73	21	26	26

June 2025

From Edexcel’s grade boundaries for June 2025: the board’s document.

Grade	Whole subjectout of 300	9BI0/1out of 90	9BI0/2out of 90	9BI0/3out of 120
A*	217	59	73	85
A	188	51	63	74
B	160	43	54	63
C	132	35	45	52
D	105	27	36	41
E	78	20	28	30

June 2024

From Edexcel’s grade boundaries for June 2024: the board’s document.

Grade	Whole subjectout of 300	9BI0/1out of 90	9BI0/2out of 90	9BI0/3out of 120
A*	205	55	72	78
A	170	44	61	65
B	144	37	51	55
C	119	30	42	46
D	94	23	33	37
E	69	17	24	28

June 2023

From Edexcel’s grade boundaries for June 2023: the board’s document.

Grade	Whole subjectout of 300	9BI0/1out of 90	9BI0/2out of 90	9BI0/3out of 120
A*	213	62	67	84
A	177	51	56	70
B	148	42	47	58
C	119	33	38	47
D	91	25	29	36
E	63	17	21	25

June 2022

From Edexcel’s grade boundaries for June 2022: the board’s document.

Grade	Whole subjectout of 300	9BI0/1out of 90	9BI0/2out of 90	9BI0/3out of 120
A*	184	54	58	73
A	147	43	46	58
B	121	35	37	47
C	95	27	29	37
D	69	20	21	27
E	43	13	13	17

November 2021

From Edexcel’s grade boundaries for November 2021: the board’s document.

Grade	Whole subjectout of 300	9BI0/01out of 90	9BI0/02out of 90	9BI0/03out of 120
A*	176	53	52	71
A	142	43	42	57
B	116	35	34	46
C	91	27	26	36
D	66	20	19	26
E	41	13	12	16

October 2020

From Edexcel’s grade boundaries for October 2020: the board’s document.

Grade	Whole subjectout of 300	9BI0/01out of 90	9BI0/02out of 90	9BI0/03out of 120
A*	187	50	64	73
A	153	41	52	60
B	125	34	42	49
C	98	27	32	38
D	71	20	23	27
E	44	14	14	16

June 2019

From Edexcel’s grade boundaries for June 2019: the board’s document.

Grade	Whole subjectout of 300	9BI0/01out of 90	9BI0/02out of 90	9BI0/03out of 120
A*	199	55	68	76
A	167	46	57	64
B	140	38	48	54
C	114	30	39	44
D	88	23	30	34
E	62	16	22	24

June 2018

From Edexcel’s grade boundaries for June 2018: the board’s document.

Grade	Whole subjectout of 300	9BI0/01out of 90	9BI0/02out of 90	9BI0/03out of 120
A*	197	55	64	78
A	167	47	54	66
B	141	39	46	55
C	115	31	38	44
D	89	24	30	34
E	64	17	23	24

June 2017

From Edexcel’s grade boundaries for June 2017: the board’s document.

Grade	Whole subjectout of 300	9BI0/01out of 90	9BI0/02out of 90	9BI0/03out of 120
A*	189	53	63	73
A	157	44	52	61
B	133	37	44	51
C	109	30	36	42
D	85	23	28	33
E	62	17	21	24

Questions

What mark do you need for a grade A in Edexcel A-level Biology B 9BI0?

In June 2026, the least mark for the whole subject that reached a grade A was 189 out of 300 in total.

What mark do you need for a grade C in Edexcel A-level Biology B 9BI0?

In June 2026, the least mark for the whole subject that reached a grade C was 131 out of 300 in total.

Which series of Edexcel A-level Biology B 9BI0 grade boundaries are there?

10 series, from June 2017 to June 2026: June 2026, June 2025, June 2024, June 2023, June 2022, November 2021, October 2020, June 2019, June 2018 and June 2017.

Do Edexcel A-level Biology B 9BI0 grade boundaries change each year?

Yes. Across the 10 series here, a grade A in total needed from 142 out of 300 (November 2021) to 189 out of 300 (June 2026).

Other Edexcel A level courses

A series, or the safe rule

A paper is graded against the boundaries of the series it was sat in. Choose that series and the grade is the one the board’s boundaries gave that sitting. Where a series published more than one set of boundaries for the whole subject, one for each combination of papers, each grade takes the highest of them, and the line under the grade says so.

The safe rule is for a mark with no series of its own, such as a mock. For each grade it takes the highest boundary in the board’s most recent summer series, up to three of them and leaving out 2020 to 2022, or the course’s main series where it has no summer one. A grade it gives would have been enough in each of them. The line under the grade names the series it counted.

In the app you log a paper in one line, or question by question where asterisk has its questions, and each grade comes from these same boundaries. Open the app.

Not here

CCEA, AS level, IB and AP: the app holds no grade boundaries for them, so they are not offered.

Where these numbers come from

Boards publish their grade boundaries after each series, and that is all this page holds: each grade’s boundary mark and what the subject or paper is out of, as the board printed them. The papers stay on the boards’ own sites; nothing here reproduces a question or a mark scheme.

Grade	Whole subjectout of 300	9BI0/01out of 90	9BI0/02out of 90	9BI0/03out of 120
A*	218	60	75	83
A	189	52	65	72
B	160	44	55	60
C	131	36	45	48
D	102	28	35	37
E	73	21	26	26

Grade	Whole subjectout of 300	9BI0/1out of 90	9BI0/2out of 90	9BI0/3out of 120
A*	217	59	73	85
A	188	51	63	74
B	160	43	54	63
C	132	35	45	52
D	105	27	36	41
E	78	20	28	30

Grade	Whole subjectout of 300	9BI0/01out of 90	9BI0/02out of 90	9BI0/03out of 120
A*	218	60	75	83
A	189	52	65	72
B	160	44	55	60
C	131	36	45	48
D	102	28	35	37
E	73	21	26	26

Grade	Whole subjectout of 300	9BI0/1out of 90	9BI0/2out of 90	9BI0/3out of 120
A*	217	59	73	85
A	188	51	63	74
B	160	43	54	63
C	132	35	45	52
D	105	27	36	41
E	78	20	28	30