SprintoFreeFor parentsStart

SOF Olympiads · 2026-27

SOF Olympiad exam dates 2026-27: IMO, ISO and IEO

SOF holds each Level 1 exam on three dates, and every school picks one of them for its students. For 2026-27: IEO on 30 September, 27 October and 17 November 2026; IMO on 23 October, 26 November and 10 December 2026; ISO on 30 October, 19 November and 3 December 2026.

Checked against sofworld.org on .

Level 1 dates

OlympiadDate 1Date 2Date 3
IEO
IMO
ISOformerly NSO

How it works

  • Through the school. SOF takes registrations only from schools, at least 30 days before the exam. A parent cannot register a child directly — ask the school's Olympiad coordinator.
  • ₹170 per Olympiad. Each exam is a separate registration, sat on paper in school, in 60 minutes.
  • Level 2 from Class 3. Classes 3 to 12 can go on to Level 2; SOF picks the top 5% of each class at Level 1. Classes 1 and 2 sit Level 1 only.
  • Practise in the real shape. Every exam page here has a free mock test in the SOF pattern — no login — to sit on screen or print.

Free mock tests, every class

A full paper in the SOF pattern for each exam — sit it on screen with an instant score, or print it with an OMR sheet. No login.

ClassIMOISOIEO
Class 1IMO 1 mock testISO 1 mock testIEO 1 mock test
Class 2IMO 2 mock testISO 2 mock testIEO 2 mock test
Class 3IMO 3 mock testISO 3 mock testIEO 3 mock test
Class 4IMO 4 mock testISO 4 mock testIEO 4 mock test
Class 5IMO 5 mock testISO 5 mock testIEO 5 mock test
Class 6IMO 6 mock testISO 6 mock testIEO 6 mock test
Class 7IMO 7 mock testISO 7 mock testIEO 7 mock test

Questions parents ask

When is the IEO 2026-27 exam?
SOF holds IEO Level 1 on three dates: 30 September, 27 October and 17 November 2026. Each school chooses one of the three for its students.
When is the IMO 2026-27 exam?
SOF holds IMO Level 1 on three dates: 23 October, 26 November and 10 December 2026. Each school chooses one of the three for its students.
When is the ISO 2026-27 exam?
SOF holds ISO Level 1 on three dates: 30 October, 19 November and 3 December 2026. Each school chooses one of the three for its students.
How do I register my child for a SOF Olympiad?
Through the school. SOF takes registrations only from schools, which apply at least 30 days before the exam date; a parent or student cannot register directly. The fee is ₹170 per Olympiad, and the exam is sat offline, in school.
Who sits Level 2?
Level 2 is held for Classes 3 to 12 only, and SOF selects the top 5% of each class at Level 1. Classes 1 and 2 sit Level 1 alone. SOF announces the Level 2 date separately.