Edexcel SNAB A Level Biology Grade Boundaries: Every Year (2016 to 2025)

Since the current Edexcel A Level Biology A (Salters-Nuffield) specification began, the A* boundary has ranged from 185 out of 300 (November 2021) to 225 out of 300 (June 2025). Every series is below, with a link to the full boundaries for each paper.

A level (9BN0) overall grade boundaries, every series

Raw marks out of 300.

Series	A*	A	B	C	D	E
June 2025	225	200	173	146	119	92
June 2024	199	171	144	117	91	65
June 2023	222	192	162	132	102	72
June 2022	186	155	128	101	75	49
November 2021	185	155	130	106	82	58
October 2020	193	163	136	109	82	55
June 2019	204	175	152	129	106	84
June 2018	197	170	145	121	97	73
June 2017	200	174	150	126	102	79

Grade A boundary for each A level paper

Raw marks (Pearson's notional component boundaries). Each paper is out of 100.

Series	Paper 1 (9BN0/01)	Paper 2 (9BN0/02)	Paper 3 (9BN0/03)
June 2025	70	64	66
June 2024	62	59	50
June 2023	68	64	60
June 2022	55	47	53
November 2021	55	54	46
October 2020	59	56	48
June 2019	63	60	52
June 2018	59	50	61
June 2017	61	57	56

AS (8BN0) overall grade boundaries, every series

Raw marks out of 160.

Series	A	B	C	D	E
June 2025	111	98	85	72	60
June 2024	116	102	88	75	62
June 2023	110	96	82	68	54
June 2022	100	87	74	61	48
November 2021	96	84	72	60	48
October 2020	97	84	71	58	46
June 2019	102	91	80	70	60
June 2018	105	95	85	75	65
June 2017	96	85	74	64	54
June 2016	86	76	66	56	47

There were no summer exams in 2020 or 2021. Pearson ran autumn series in October 2020 and November 2021.

Practise

• Edexcel SNAB past papers, mark schemes and examiners' reports
• Past papers for other exam boards

Source: Pearson's published grade boundaries for each series (linked from each year's post).