IGCSE Biology (9-1) 0970 grade boundaries — June 2025

Cambridge IGCSE (CAIE) (0970). The official grade thresholds for the June 2025 series — the minimum raw mark needed for each grade, by tier and paper combination. Pick the option matching the papers you sat.

Cambridge publishes these as grade threshold tables: "grade thresholds" and "grade boundaries" are two names for the same numbers.

June 2025 at a glance

A 9 in Biology (9-1) required 9/9 (100%) on option mark after.
That 9 threshold is unchanged from November 2024.
A grade 4 needed roughly 45% on option mark after.

Option mark after

Grade	Min mark	Min %
9	9	100%
8	8	89%
7	7	78%
6	6	67%
5	5	56%
4	4	45%
3	3	34%
2	2	23%
1	1	12%

Maximum mark: 9.

Papers 21, 41, 51

Grade	Min mark	Min %
9	164	82%
8	147	74%
7	131	66%
6	112	57%
5	93	47%
4	75	38%
3	62	31%
2	50	25%
1	38	19%

Maximum mark: 200.

Papers 21, 41, 61

Grade	Min mark	Min %
9	165	83%
8	148	74%
7	132	66%
6	113	57%
5	94	47%
4	76	38%
3	64	32%
2	52	26%
1	40	20%

Maximum mark: 200.

Papers 22, 42, 62

Grade	Min mark	Min %
9	178	89%
8	163	82%
7	149	75%
6	132	66%
5	115	58%
4	99	50%
3	81	41%
2	63	32%
1	45	23%

Maximum mark: 200.

Papers 11, 31, 51

Grade	Min mark	Min %
5	133	67%
4	117	59%
3	95	48%
2	74	37%
1	53	27%

Maximum mark: 200.

Papers 11, 31, 61

Grade	Min mark	Min %
5	134	67%
4	118	59%
3	97	49%
2	76	38%
1	55	28%

Maximum mark: 200.

Papers 12, 32, 62

Grade	Min mark	Min %
5	127	64%
4	113	57%
3	95	48%
2	77	39%
1	59	30%

Maximum mark: 200.

Calculate your Biology (9-1) grade →

Official source (PDF) →

Figures sourced from the official Cambridge grade threshold tables. Always confirm with your exam board.