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IOS Eligibility Criteria: Guide for Students, Parents, and Schools 2025-26

IOS 2025-26 Eligibility Criteria: The International Olympiad of Science (iOS), conducted by the Indian Talent Olympiad (ITO), is one of the most competitive and respected science olympiads in India. Students from all over the country and abroad participate every year to showcase their scientific understanding and analytical skills.

To participate in this exam, it is important to understand the iOS 2025-26 eligibility criteria clearly. This article provides in-depth details about who can apply, class-wise eligibility, and participation modes for the upcoming session.

What is iOS 2025-26?

The International Olympiad of Science (iOS) 2025-26 is a national-level science competition conducted for students from Class 1 to Class 10. The objective of this Olympiad is to develop students’ interest in science and assess their conceptual clarity through competitive-level questions.

Overview of iOS 2025-26 Eligibility Criteria

Here is a table outlining the general eligibility conditions for iOS 2025-26:

Criteria

Details

Exam Name

International Olympiad of Science (iOS) 2025-26

Conducting Body

Indian Talent Olympiad (ITO)

Applicable Classes

Students from Class 1 to Class 10

Nationality

Indian and International students studying in India

Eligible Boards

CBSE, ICSE, State Boards, and other recognized boards

Participation Type

School Registration or Individual Registration

Previous Participation

Not mandatory

Mode of Exam

Online or Offline (as per school choice)

Who is Eligible to Appear for iOS 2025-26?

1. Students from Class 1 to Class 10

The Olympiad is open to students studying in any standard from Class 1 to Class 10. Students must be enrolled in a recognized school for the academic session 2025-26.

2. Students from All Boards

All students studying under CBSE, ICSE, state boards, and international boards can participate. The Olympiad syllabus is aligned with the current curriculum followed by these boards.

3. Students from Recognized Schools

To be eligible for iOS 2025-26, a student must be studying in a recognized school affiliated with any educational board. Indian schools operating abroad are also considered eligible.

iOS Class-wise Eligibility Breakdown

Class

Eligibility Requirement

Class 1

Must be enrolled in Class 1 during academic year 2025-26

Class 2

Open to students studying in any recognized school in Class 2

Class 3

Should be enrolled in Class 3 and follow a recognized curriculum

Class 4

Students must be studying in Class 4 in 2025-26

Class 5

All students in Class 5 are eligible regardless of academic score

Class 6

Must be currently enrolled in Class 6

Class 7

Students studying in Class 7 in any Indian or affiliated school

Class 8

Class 8 students from all boards and schools are eligible

Class 9

Students must be in Class 9 as of the 2025-26 academic session

Class 10

Senior-most eligible class; must be actively enrolled in Class 10

iOS Registration Modes and Their Eligibility Conditions

There are two major ways a student can register for the iOS 2025-26:

1. Through School

  • The school must be registered with Indian Talent Olympiad.
  • A teacher or school coordinator manages the registration.
  • A group of at least 40 students is ideal for smoother coordination.

2. Individual Registration

  • Students whose schools are not participating can register individually.
  • The student or parent must visit the Indian Talent Olympiad’s official website.
  • Registration fee payment is done online.

iOS Eligibility for International Students

Students studying in Indian schools located abroad or NRI students can also register.

Criteria

Details

Nationality

Must be an Indian student or studying in an Indian school

Location

Can be outside India

Class

Must be in Class 1 to Class 10

Mode of Exam

Online (as per Indian Talent Olympiad guidelines)

No Age Limit or Minimum Marks Requirement

There is no minimum academic performance requirement for appearing in the iOS exam. It is an open platform where any student who meets the class-based eligibility can participate. Age limits are not enforced as long as the student is in the eligible class range.

Is Prior Participation Required?

No. Students do not need to have appeared in any previous Olympiads to be eligible for iOS 2025-26. First-time participants are welcome across all classes.

Benefits of Meeting the iOS Eligibility Criteria

  • Ensures smooth registration without disqualification.
  • Enables access to competitive preparation material and past sample papers.
  • Allows participation in one of India’s most recognized science olympiads.

iOS 2025-26 Important Dates (Tentative)

Although this article focuses on eligibility, having an idea of the timeline helps in planning ahead.

Event

Tentative Date

Last Date of Registration

30th August 2025

First Exam Date

18th November 2025 (Tuesday)

Second Exam Date

10th December 2025 (Wednesday)

Result Announcement (Level 1)

February/March 2026

Level 2 Exam Date

To be announced

Key Reminders on iOS 2025-26 Eligibility Criteria

  • Students can register through schools or individually.
  • Ensure all personal and academic details entered during registration are correct.
  • There is no screening or entrance barrier; all students in Class 1–10 are welcome.
  • Olympiads are held in both online and offline modes, depending on the school.

Conclusion

The iOS 2025-26 eligibility criteria are designed to be inclusive and student-friendly. With no strict performance filters, students across classes and boards can participate and benefit from this national-level platform. Whether you’re from a metro city or a rural school, this science Olympiad opens the door to national recognition, analytical growth, and academic excellence.

Students and parents are encouraged to register early, understand the syllabus, and begin their preparation in advance.

IOS 2025-26 Eligibility Criteria FAQs

Q1. Who is eligible to participate in iOS 2025-26?
Answer:
Students from Class 1 to Class 10, enrolled in any recognized school affiliated with CBSE, ICSE, state, or international boards are eligible to appear.

Q2. Can students register for iOS 2025-26 individually?
Answer:
Yes, students can register individually through the official website of Indian Talent Olympiad if their school is not participating.

Q3. Is there any requirement for previous Olympiad participation?
Answer:
No, previous participation is not required. First-time participants can directly apply.

Q4. Are there any minimum marks or age criteria?
Answer:
No. There are no minimum academic marks or age restrictions. Eligibility is based only on the student’s class.

Q5. Can Indian students abroad register for iOS 2025-26?
Answer: Yes, Indian students studying abroad in Indian-affiliated schools can register and appear for the exam online.

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