The International Olympiad of Sciences (IOS) is an annual exam organized by the SilverZone Foundation. It's designed to know how good students are in and understand Science. This large competition is available for students of Science in Indian schools and schools all over the world. It provides them with an opportunity to judge their abilities on an international platform. IOS test covers school board topics such as CBSE, ICSE, and state boards. It wishes to make the students proficient in Science. But aside from winning, the contest wishes to enable a solid foundation in Science. Participation in IOS makes the students more analytical, solve problems, and know Science inside out. All these will serve them well in their studies and careers later.
One of the best things about IOS is that students receive a detailed report after the test. The report informs them where they are good and where they need to improve. It shows them how they can become better at Science. With the knowledge of their strengths and weaknesses, students can strategize how to develop in their studies and life. In the end, the International Olympiad of Science provides young science enthusiasts with the training that they require to excel in school and beyond.
Exam Name | International Olympiad of Science (IOS) |
Mode of Exam | Online |
Medium of Exam | English |
Level of Exam | Intermediate |
Duration of Exam | 40 minutes |
Type of Questions | MCQs (Multiple Choice Questions) |
Negative Marking | No Negative Marking |
Conducting Body | SilverZone Foundation |
It's essential to stay updated on the latest dates announced by Silverzone for the International Olympiad of Science and related events. There will be two dates for the exam announced by the officials. For your reference, we have provided the following table:
Name of Events | Important Dates (tentative) |
Last Date of Registration of the IOS 2025 | 30th August 2025 |
First Date of IOS 2025 Olympiad | 18th November 2025 (Tuesday) |
Second Date of IOS 2025 Olympiad | 10th December 2025 (Wednesday) |
Result of IOS 2025 Olympiad Level 1 | February/ March 2026 |
Result of IOS 2025 Olympiad Level 2 | To be Notified |
Level 1:
Level 2:
Level 3:
Concept of the syllabus and pattern of exam plays a very significant role in forming your preparation plan for the SilverZone Olympiads. It not only helps you to focus your studies accordingly but also to get used to the exam pattern.
The new pattern and syllabus of the latest exam have been announced by the authorities, such as the list of key topics, number of questions, and marking schemes.
Yet, it's to be noted that the final marking schema can be different on the basis of the test paper makers' decisions. For class 1 to class 12, the revised IOS 2025 Exam Syllabus and test pattern are given below:
The test will be in English only, and it is for students in first through 12th grade. Here's what you can expect:
Along with the question papers, you'll receive all the specific instructions. From 3rd grade onwards, you will have OMR answer sheets.
There will be multiple-choice answers to the questions. You don't have to worry if you guess wrong - there are no penalties!
Ready to challenge yourself and compete against the best? Here's how to apply for the International Olympiad in Science (IOS):
The online announcement of the IOS 2025-26 Level 1 exam results will be available on the official website. Successful candidates will advance to the IOS 2025-26 Level 2 exam. The Level 3 examination is going to be held in May/June 2025(Tentative), and its results are anticipated to be revealed by August/September 2026(Tentative).
Curious about IOS 2025 Rankings and Rewards? Here's what you need to know about the rankings and the exciting rewards awaiting the International Olympiad in Science for 2025 participants.
The top two students from each subject have an exciting opportunity for an educational excursion abroad for the Math & Science Olympiad, including a visit to NASA in the USA.
To excel in the Olympiad exams, students can follow these helpful tips:
(Session 2025 - 26)