ISO Cut Offs 2026-27

ISO Cut Offs – Science Olympiad Foundation releases the ISO Cut-Offs for the session 2026-27. The Cut Off marks are applicable for determining the qualifiers for the 2nd level of Science Olympiad Foundation’s ISO 2026-27. Class-wise cut off mark are provided in this page. Students of Class 1 to 10 – M3, M2, M1 & for class 11 & 12 students, the series is M3, M1, M2, M4. Students can check the SOF ISO 2026-27 Cut Offs list from this page, scroll down for ISO Cut Offs.

SOF ISO Cut Off 2026-27 – Qualifying Criteria for Level 2

SOF does not release a single fixed cut off mark on its website. Instead, as per Science Olympiad Foundation, a student qualifies for the 2nd level (Level 2) exam of SOF ISO if they meet any one of the following official criteria.

• Top 5% of candidates, class wise, who appear for the 1st level exam. Each section is considered separately.
• Zone wise / state wise top 25 rank holders, class wise.
• Class topper, where at least 10 students from a class appear in the exam and score 50% or above marks.

The Level 2 exam is conducted only for students of classes 3 to 12. There is no Level 2 exam for classes 1 and 2; these students are awarded ranks on the basis of their Level 1 performance. For reference, the class-wise cut off marks of previous years are given below.

ISO Cut Offs 2026-27

In case more than one student score same total marks, marks obtained section-wise are considered to determine qualifiers to the 2nd level. Weightage is divided into sections, which can be seen on this page. ISO Cut offs 2026-27 are provided here.

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Check SOF Cut Offs 2026-27 – Candidates can check the cut-offs from sofworld.org as announced.

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ISO Cut Offs 2023-24

SOF N.S.O (2023-24) – 1ST LEVEL CUT-OFF TOP-5%
CLASS	TOTAL MARKS	ACHIEVERS SECTION [M3]	SCIENCE [M2]	LOGICAL REASONING [M1]
03	31	6	22	3
04	30	6	20	4
05	40	9	24	7
06	40	9	21	10
07	39	12	20	7
08	37	6	26	5
09	38	12	23	3
10	40	12	22	6
CLASS	TOTAL MARKS	ACHIEVERS SECTION [M3]	PHYSICS & CHEMISTRY [M1]	SCIENCE (MATHEMATICS/BIOLOGY) [M2]
11	32	12	9	11
12	35	9	12	14

ISO Cut Offs 2022 -23

SOF N.S.O (2022-23) – 1ST LEVEL CUT-OFF TOP-5%
CLASS	TOTAL MARKS	ACHIEVERS SECTION [M3]	SCIENCE [M2]	LOGICAL REASONING [M1]
03	31	8	18	5
04	30	8	18	4
05	45	15	23	7
06	44	9	27	8
07	42	12	24	6
08	42	6	28	8
09	40	12	18	10
10	42	12	20	10
CLASS	TOTAL MARKS	ACHIEVERS SECTION [M3]	PHYSICS & CHEMISTRY [M1]	SCIENCE (MATHEMATICS/BIOLOGY) [M2]
11	36	9	14	13
12	34	9	11	14

22nd ISO 2019 – 2020 Cut Offs

Students can check the 2019-20 session’s cut off from the below given table, cut off list is for level 1:

CLASS	TOTAL MARKS	ACHIEVERS SECTION[M3]	SCIENCE[M2]	LOGICAL REASONING[M1]
03	33	8	21	4
04	28	4	19	5
05	43	12	25	6
06	41	9	23	9
07	40	6	24	10
08	38	9	24	5
09	35	12	18	5
10	40	12	22	6
11	32	3	5	8
12	33	12	3	8

CLASS	TOTAL MARKS	ACHIEVERS SECTION[M3]	PHYSICS[M1]	CHEMISTRY[M2]	SCIENCE (MATH/BIO)[M4]
11	32	3	5	8	16
12	33	12	3	8	10

21st ISO 2018 – 2019 Cut Offs

CLASS	TOTAL MARKS	M1	M2	M3	M4
3	30	4	22	4
4	27	5	16	6
5	40	9	22	9
6	39	9	24	6
7	39	9	27	3
8	37	4	24	9
9	38	8	21	9
10	39	5	19	15
11	30	7	5	9	9
12	33	5	7	9	12

20th ISO 2017 – 2018 Cut Offs

CLASS	TOTAL MARKS	M1	M2	M3	M4
3	29	5	16	8
4	27	4	17	6
5	36	4	20	12
6	35	8	18	9
7	34	4	18	12
8	36	6	21	9
9	34	8	20	6
10	35	7	19	9
11	28	4	6	6	12
12	33	5	7	12	9

19th ISO 2016 – 2017 Cut Offs

CLASS	TOTAL MARKS	M1	M2	M3	M4
3	29	2	17	10
4	27	5	18	4
5	40	5	23	12
6	40	8	20	12
7	34	6	19	9
8	37	9	22	6
9	35	9	23	3
10	36	6	15	15
11	30	5	3	12	10
12	31	6	2	9	14

18th ISO 2015 – 2016 Cut Offs

CLASS	TOTAL MARKS	M1	M2	M3	M4
3	26	4	14	8
4	26	5	17	4
5	35	5	18	12
6	38	8	21	9
7	40	7	21	12
8	40	7	21	12
9	35	7	25	3
10	37	9	16	12
11	29	7	4	12	6
12	33	2	7	12	12

17th ISO 2014 – 2015 Cut Offs

CLASS	TOTAL MARKS	M1	M2	M3	M4
3	28	10	12	6
4	24	6	10	8
5	38	13	16	9
6	36	9	18	9
7	33	11	16	6
8	35	9	14	12
9	36	12	18	6
10	36	14	13	9
11	31	4	9	9	9
12	31	3	7	9	12

16th ISO 2013 – 2014 Cut Offs

The following cut off marks are applicable for determining qualifiers to the 2nd level of ISO.

16th International Science Olympiad (Cut-off-Marks)

CLASS	TOTAL MARKS	M4	M3	M2	M1
01	-NA-	-NA-	-NA-	-NA-	-NA-
02	-NA-	-NA-	-NA-	-NA-	-NA-
03	27	-NA-	6	13	8
04	25	-NA-	6	12	7
05	37	-NA-	9	19	9
06	36	-NA-	12	19	5
07	36	-NA-	3	21	12
08	37	-NA-	9	19	9
09	34	-NA-	12	11	11
10	38	-NA-	15	14	9
11	32	11	15	4	2
12	33	17	3	5	8

The cut off is class wise. In case more than one student score same marks, marks obtained section wise are considered to determine qualifiers to the 2nd level. Weightage is given to sections in the following order:

19th ISO Weightage

M1: Achiever’s Section
M2: Science
M3: Logical Reasoning

For Class 11th and 12th

M1: Achiever’s Section
M2: Physics
M3: Chemistry
M4: Mathematics/Biology

17th and 18th ISO Weightage

For class 3rd to 10th

M1: Logical Reasoning
M2: Science
M3: Achiever’s Section

For Class 11th and 12th

M1: Physics
M2: Chemistry
M3: Achiever’s Section
M4: Mathematics/Biology

16th ISO Weightage

For class 3rd to 10th

M1: Achiever’s Section
M2: Science
M3: Mental Ability

For Class 11th and 12th

M1: Achiever’s Section
M2: Physics
M3: Chemistry
M4: Mathematics/Biology

The above cut off is applicable to determine top 5% students class wise.

In addition to above, class toppers, where at least 10 students from a class appeared for ISO and top 10 rank holders, class wise, from each state also qualify for the 2nd level.