SOF ISSO Answer Key 2025-26, Download PDF, Set A, B, C Answer Key
SOF ISSO Answer Key 2025-26 for Set A is now available for download on sofworld.org for students in Classes 3 to 10. This key allows students to calculate their estimated scores immediately, while the keys for Sets B and C are awaited for later release.
Goldi Tomar21 Nov, 2025
SOF ISSO Answer Key 2025-26 for Set A was released on November 3, 2025, by the Science Olympiad Foundation (SOF). Students who appeared for the International Social Studies Olympiad can download the class-wise PDF keys from the official website, sofworld.org. The keys for Sets B and C are scheduled for release in December 2025 and February 2026, respectively.
SOF ISSO Answer Key 2025-26 SET A Out
The SOF officially released the Answer Key for Set A of the ISSO examination on November 3, 2025. This release covers the exam held on September 18, 2025. Students can access the Set A key in PDF format. The keys for Set B and Set C are expected in December 2025 and February 2026, respectively.
SOF ISSO Answer Key 2025-26 Overview
The SOF ISSO is an annual competition to test students’ knowledge in Social Studies. Below is a concise overview of the exam's important details.
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SOF ISSO Answer Key 2025-26 Overview |
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Particulars |
Details |
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Exam Name |
SOF International Social Studies Olympiad (ISSO) |
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Conducting Body |
Science Olympiad Foundation (SOF) |
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Exam Dates |
Date 1: September 18, 2025; Date 2: November 20, 2025; Date 3: January 23, 2026 |
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Answer Key Release (Set A) |
November 3, 2025 |
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Classes Participated |
Classes 3 to 10 |
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Official Website |
sofworld.org |
SOF ISSO Answer Key 2025-26 Set A (Class 3-10)
The Answer Keys for Set A have been published class-wise. Students must click the links on the official SOF portal to download the respective PDFs.
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SOF ISSO Answer Key 2025-26 Set A (Class 3-10) |
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Class |
Answer Key Download Link |
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Class 3 |
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Class 4 |
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Class 5 |
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Class 6 |
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Class 7 |
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Class 8 |
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Class 9 |
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Class 10 |
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Steps to Download SOF ISSO Answer Key 2025-26
The Answer Key is released only on the official website in PDF format. Follow these simple steps to access your required key.
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Visit the official SOF website: sofworld.org.
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Find and click on the “Answer Key” link.
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On the next page, select your specific class.
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Download the SOF ISSO Answer Key PDF.
SOF ISSO 2025-26 Marking Scheme Class Wise
Understanding the marking scheme is essential for calculating an accurate self-assessment score. The structure varies slightly depending on the student's class.
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SOF ISSO 2025-26 Marking Scheme Class Wise |
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Class |
Total Questions |
Total Marks |
Marks Per Question (Achievers Section) |
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Classes 3 & 4 |
35 |
40 |
2 Marks |
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Class 5 |
50 |
60 |
3 Marks |
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Classes 6 to 8 |
50 |
60 |
3 Marks |
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Classes 9 & 10 |
50 |
60 |
3 Marks |