Nature Of Science Grade Boundaries

View IB Nature Of Science grade boundaries over time for SL. Understand score trends and how marks convert into final IB grades.

Grade boundaries explain how raw exam marks are converted into final IB grades from 1 to 7 and are adjusted each session to reflect exam difficulty and global student performance.

By reviewing grade boundaries over time, students and teachers can better understand expectations, identify trends, and set more accurate performance targets.

Group 4: Sciences

Grade Boundaries Over Time

Detailed Boundaries

Session	7	6	5	4	3	2
M25	77	66	56	46	38	19
M24	77	66	56	46	38	19
M23	79	68	57	48	40	20
M22	70	61	51	43	36	18
M21	65	57	45	38	21	8
M19	75	63	51	40	31	16

Frequently Asked Questions

IB Nature Of Science Grade Boundaries

Nature Of Science Grade Boundaries

Grade Boundaries Over Time

Detailed Boundaries

Frequently Asked Questions

Are IB Nature Of Science grade boundaries the same every year?

Do Higher Level Nature Of Science and Standard Level Nature Of Science share the same boundaries?

Should I aim exactly for the grade boundary?

Can grade boundaries predict my final grade?

Session	7	6	5	4	3	2
M25	77	66	56	46	38	19
M24	77	66	56	46	38	19
M23	79	68	57	48	40	20
M22	70	61	51	43	36	18
M21	65	57	45	38	21	8
M19	75	63	51	40	31	16

Session	7	6	5	4	3	2
M25	77	66	56	46	38	19
M24	77	66	56	46	38	19
M23	79	68	57	48	40	20
M22	70	61	51	43	36	18
M21	65	57	45	38	21	8
M19	75	63	51	40	31	16

Session	7	6	5	4	3	2
M25	77	66	56	46	38	19
M24	77	66	56	46	38	19
M23	79	68	57	48	40	20
M22	70	61	51	43	36	18
M21	65	57	45	38	21	8
M19	75	63	51	40	31	16