SOF ISO Answer Key 2026 to Out Soon at sofworld.org, Check Details

Science Olympiad Foundation (SOF) conducted the International Science Olympiad (ISO) Level 1 examination on October 30, 2026, for the 2026–27 academic session. Students from Classes 1 to 12 who appeared for the examination are now waiting for the SOF ISO Answer Key 2026.

The answer key will help students compare their responses with the correct answers and estimate their probable scores before the declaration of the results. SOF has not yet confirmed the release date of the ISO answer key. Students can check the official website, sofworld.org, for the latest announcement and answer key PDF.

The foundation is conducting the Level 1 examination on three dates: October 30, November 19 and December 3, 2026. Since separate question papers are used for different examination dates, students must select the answer key corresponding to their paper set.

Here are the important details about the SOF ISO Answer Key 2026, its expected availability, download process and Level 2 examination.

SOF ISO Answer Key 2026: Highlights

Students can refer to the table below for the important details of the SOF International Science Olympiad 2026–27.

Students can also check the SOF Olympiad Exams 2026 Schedule and Registration Details to understand the examination dates and other Olympiads conducted during the academic session.

SOF ISO Answer Key 2026 Release Date

Students who appeared for the SOF ISO Level 1 examination on October 30, 2026, are waiting for the official answer key. However, the Science Olympiad Foundation has not announced a confirmed release date yet.

The answer key is expected to be made available through the official SOF website. Students should regularly visit sofworld.org to check whether the download link has been activated.

The foundation is conducting the ISO Level 1 examination on three dates. As separate question papers are prepared for different dates, the answer key availability may also vary according to the respective examination set.

For information about the previous SOF answer key releases and their download process, students can refer to the SOF Answer Key Previous Year Update.

SOF ISO Answer Key 2026: Set-Wise Details

The SOF International Science Olympiad Level 1 examination is scheduled on three different dates. Students must ensure that they select the correct answer key according to their examination date and question paper set.

The official release schedule for the different ISO answer key sets has not been confirmed. Students should check the SOF website for class-wise and set-wise PDF links.

How to Download SOF ISO Answer Key 2026?

Once the Science Olympiad Foundation activates the answer key link, students can download the PDF from its official website. Follow the steps below:

1. Visit the official SOF website at sofworld.org.

2. Open the answer key section available on the homepage.

3. Click on the SOF Answer Keys 2026–27 link.

4. Select the International Science Olympiad (ISO) from the list, if available.

5. Choose the relevant class and question paper set.

6. The SOF ISO Answer Key 2026 PDF will appear on the screen.

7. Download the PDF and save it for future reference.

8. Compare the answers with the responses marked in the examination.

Students should select the correct class and question paper set before checking their responses. They can also refer to the SOF Exam Pattern and Marking Scheme 2026–27 to understand the marks distribution for their class.

How to Calculate Marks Using SOF ISO Answer Key 2026?

The SOF ISO answer key will help students evaluate their performance by matching their responses with the official answers. After downloading the relevant PDF, students can follow these steps to estimate their scores:

1. Open the answer key PDF for the correct class and examination set.

2. Compare each response marked during the examination with the corresponding answer in the key.

3. Count the number of correct responses.

4. Refer to the marking scheme applicable to your class.

5. Calculate the probable score based on the marks assigned to each question.

Students should use the official class-wise marking scheme while calculating their scores. The estimated marks are only for self-assessment and should not be considered the final result.

SOF ISO Level 2 Examination 2026–27

The SOF International Science Olympiad is conducted in two levels. Students from Classes 1 to 12 can appear for Level 1, while the Level 2 examination is applicable to students from Classes 3 to 12 who meet the qualification criteria.

The Level 2 examination provides eligible students with another opportunity to demonstrate their understanding of scientific concepts and reasoning skills. The foundation will announce the Level 2 examination schedule separately.

Students can read the SOF International Science Olympiad Exam Details for information about eligibility, syllabus, examination pattern and qualification.

Other SOF Olympiad Answer Keys and Exam Updates

Apart from the International Science Olympiad, the Science Olympiad Foundation conducts several other Olympiads for students across different classes. Students and parents can refer to the following PW resources for related examination and answer key updates:

• SOF IGKO Answer Key 2026: Check the International General Knowledge Olympiad answer key details.

• SOF IEO Answer Key: Read about the International English Olympiad answer key.

• SOF ISSO Answer Key: Find details about the International Social Studies Olympiad answer key.

• SOF International Mathematics Olympiad 2026–27: Check the IMO examination schedule and eligibility.

• SOF International Computer Science Olympiad: Get information about ICSO eligibility, exam dates and pattern.

• SOF International English Olympiad 2026–27: Check IEO examination dates, syllabus and result details.

• SOF International Hindi Olympiad 2026–27: Read about IHO eligibility, schedule and examination pattern.

SOF ISO Answer Key 2026: Important Instructions

Students should keep the following points in mind while checking the answer key:

• Download the answer key only from the official SOF website.

• Select the correct class and question paper set.

• Match responses carefully to avoid calculation errors.

• Follow the applicable marking scheme while estimating scores.

• Do not treat the estimated score as the final result.

• Keep checking the official website for answer key and result announcements.