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Science Olympiad Foundation (SOF) · Science · Class 6

International Science Olympiad (ISO) — formerly National Science Olympiad (NSO) Class 6: syllabus, dates and exam pattern (2026–27)

Everything you need in one place — the exact NCERT chapters this paper tests, all 3 exam dates, the registration window, and the full marking scheme. Updated for the 2026–27 session.

Last verified against Science Olympiad Foundation (SOF)'s own site on 11 August 2026.

2026–27 exam dates

Date 1

30 October 2026

Date 2

19 November 2026

Date 3

3 December 2026

Registration: Your school picks one of the three dates above, and registrations must reach SOF 30 days before that chosen date — so 30 September 2026 for the October date, 20 October for the November date, and 3 November for the December date. The school chooses the date, not the family, and once chosen it cannot be changed. Ask your school coordinator which date they have picked and work backwards from that one cutoff.

Free — deadline calendar

The deadline is set by your school, not by you

Most parents find the exam date and assume they have until then. The registration window closes long before it, and for some papers it has already started closing. Here is how it actually works.

  • Your school registers your child and your school picks which of the 2–3 dates the class sits. The family does not choose.
  • For SOF papers, registrations must reach SOF exactly 30 days before that chosen date — and once the school has chosen, the date cannot be changed.
  • CREST is the exception: it registers students directly, online, with no school involved. It is the one body a parent can act on alone.

Closing next

  • Indian Talent Olympiad — Set A

    Registration closes 31 August 2026 · all five subjects

  • SOF IEO (English)

    If your school picks 30 September 2026, registration closes 31 August 2026 · English

  • SOF IMO (Maths)

    If your school picks 23 October 2026, registration closes 23 September 2026 · Maths

Get the full calendar on WhatsApp

Every deadline in this box was checked against that exam body's own website on 11 August 2026. Bodies do move dates — we re-check every Monday.

Exam pattern

How the NSO paper is structured

SectionQuestionsMarks per questionSection total
Logical Reasoning10110
Science35135
Achievers Section5315
Total50 questions60 marks · 60 minutes

Roughly 60% of questions come from the current Class 6 syllabus and 40% carry over from Class 5.

Syllabus

Science syllabus mapped to NCERT Curiosity (Class 6, 2026-27)

Ch 1. The Wonderful World of Science

Olympiad syllabus label: Science in Everyday Life / Measurement

Ch 2. Diversity in the Living World

Olympiad syllabus label: Getting to Know Plants / Living Organisms

Ch 3. Mindful Eating: A Path to a Healthy Body

Olympiad syllabus label: Food: Where Does It Come From? / Components of Food

Ch 4. Exploring Magnets

Olympiad syllabus label: Fun with Magnets

Ch 5. Measurement of Length and Motion

Olympiad syllabus label: Motion and Measurement of Distances

Ch 6. Materials Around Us

Olympiad syllabus label: Sorting Materials into Groups

Ch 7. Temperature and its Measurement

Olympiad syllabus label: Heat — Thermometers

Ch 8. A Journey through States of Water

Olympiad syllabus label: Water / States of Matter

Ch 9. Methods of Separation in Everyday Life

Olympiad syllabus label: Separation of Substances

Ch 10. Living Creatures: Exploring their Characteristics

Olympiad syllabus label: Body Movements / Getting to Know Plants

Ch 11. Nature's Treasures

Olympiad syllabus label: Air Around Us / Natural Resources

Ch 12. Beyond Earth

Olympiad syllabus label: The Solar System / Stars

The Logical Reasoning section (10 questions) is a separate reasoning spine — verbal and non-verbal reasoning — not tied to the science chapters above.

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Sample questions

Practice questions in the NSO format

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Frequently asked questions

Yes. SOF renamed the National Science Olympiad (NSO) to the International Science Olympiad (ISO) starting the 2026-27 session — same exam body, same syllabus approach, new name and international framing.

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