SOF ISSO Answer Key 2024-25 PDF: Check SOF International Social Studies Olympiad Answer Sheet

Mallika ThaledderUpdated on 04 Nov 2025, 04:44 PM IST

The SOF releases the ISSO answer key on the official website, sofworld.org, in a PDF format. The SOF International Social Studies Olympiad (ISSO) answer key for Set A was released on November 3, 2025. The answer keys for Sets B & C will be released in December 2025 and February 2026, respectively. Students can use the SOF ISSO answer key to know the correct answer and calculate their exam scores. The SOF ISSO exam 1 was held on September 18, 2025, while exam 2 & 3 will be held on three different dates, i.e., November 20, 2025 and January 23, 2026.
SOF ISSO Answer Key 2025-26 (Set A)

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SOF ISSO Answer Key Overview
SOF ISSO Answer Key 2025-26
How to Download SOF ISSO Answer Key?
SOF ISSO Marking Scheme

The Science Olympiad Foundation (SOF) conducts the International Social Studies Olympiad (ISSO) for students from Classes 3 to 10. It is an annual competition organised by SOF to analyse students' knowledge and skills in Social Studies. The SOF ISSO answer key will include the answers to the questions asked in the SOF ISSO exam. By checking the answer key, students can predict their SOF ISSO result.

SOF ISSO Answer Key Overview

SOF releases the SOF ISSO answer key on the official website. Students must visit the website every other day to keep track of upcoming events. Below, we have provided an overview of SOF ISSO for the students’ general knowledge.

SOF ISSO Answer Key Overview

Particulars	Details
Exam name	SOF ISSO
Exam date	Date 1: September 18, 2025 Date 2: November 20, 2025 Date 3: January 23, 2026
Answer key release date	November 3, 2025 (Set A) December 2025 (Set B) February 2026 (Set C)
Classes participate	Classes 3 to 10
Official website	sofworld.org

SOF ISSO Answer Key 2025-26

The Science Olympiad Foundation released the Set A answer key for the SOF ISSO exam. Students can check out the table below to get the set-wise answer keys PDF.

Class	Set A
Class 3	Click here
Class 4	Click here
Class 5	Click here
Class 6	Click here
Class 7	Click here
Class 8	Click here
Class 9	Click here
Class 10	Click here

How to Download SOF ISSO Answer Key?

Students who appeared for the ISSO exam can check the answer key on the official SOF website. Below, we have provided simple steps for students on how to download the SOF ISSO answer key.

Visit the official website, sofworld.org.
Click on the “Answer Key” link.
On the next page, select the class and download the ISSO answer key PDF.

SOF ISSO Marking Scheme

Students appearing for the exam have to learn about the SOF ISSO marking scheme. The marking scheme helps with understanding the exam pattern. Below, we have provided the SOF ISSO marking scheme for Classes 3 to 10 for the students’ reference.

SOF ISSO Marking Scheme for Classes 3 and 4

Class	Topic	No. of Questions	Marks per question	Total Marks
3rd & 4th	Social Studies	30	1	30
	Achievers Section	5	2	10
	Total	35		40

SOF ISSO Marking Scheme for Class 5

Class	Topic	No. of Questions	Marks per question	Total Marks
5th	Social Studies	45	1	45
	Achievers Section	5	3	15
	Total	50		60

SOF ISSO Marking Scheme for Classes 6 to 8

Class	Topic	No. of Questions	Marks per question	Total Marks
6th to 8th	History	20	1	20
	Geography	15	1	15
	Social and Political Life	10	1	10
	Achievers Section	5	3	15
	Total	50		60

SOF ISSO Marking Scheme for Class 9-10

Class	Topic	No. of Questions	Marks per question	Total Marks
9th & 10th	History	15	1	15
	Geography	10	1	10
	Political Science	10	1	10
	Economics	10	1	10
	Achievers Section	5	3	15
	Total	50		60