Choose an Olympiad Organizer

  • Science Olympiad Foundation banner featuring NSO, IMO, ICSO, IEO, IGKO and ISSO exam preparation.

    Science Olympiad Foundation (SOF)

    Preparing for IMO, NSO, IEO, ICSO, ISSO or IGKO? Begin your Science Olympiad Foundation journey here.

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  • Silverzone Foundation banner featuring iOS, iOM, iOEL, iIO, SKGKO and iRAO Olympiad preparation.

    SilverZone Foundation

    Give a boost to your IOS, IOM, SKGKO, IOEL, ISSO, IIO and ITHO preparation with focused resources for Silverzone Foundation exams.

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  • Unified Council Olympiads banner featuring NSTSE, UIMO, UIEO, UIGKO and UCO exam preparation.

    Unified Council

    Looking to excel in NSTSE, UIMO, UIEO, UIGKO or UCO? Begin your Unified Council preparation with targeted resources.

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Why Olympiadtester

  • Shield icon with 2014 calendar representing Olympiadtester trusted since 2014

    Trusted Since 2014

    Among India’s early online Olympiad preparation platforms, helping students achieve top national and international ranks for over a decade.

  • Folder with PDF papers and computer screen showing online Olympiad practice tests.

    Free Olympiad Resources

    Explore a comprehensive collection of free sample papers, chapter-wise practice tests and full-length mock exams across classes and subjects.

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  • Laptop showing online mock test with timer, checklist and performance graph representing exam simulation.

    Full-Length Online Mock Tests

    Deep practice through full-length mock tests that simulate real exam conditions, helping eliminate exam fear and build confidence.



  • Open book with chapter checklist leading to brain with puzzle pieces representing chapter-wise HOT mastery in Olympiad preparation.

    Chapter-Wise HOT Mastery

    Syllabus-aligned chapter-wise practice strengthens core concepts, while Higher Order Thinking (HOT) questions develop analytical depth required for top ranks.

  • Globe with performance chart and medal representing global benchmarking in Olympiad preparation.

    Performance Benchmarks

    Compare your performance with global peers through structured scoring insights that indicate potential rank and overall Olympiad readiness.

  • OCS Olympiadtester Certified Student badge with certificate, graduation cap and gold medal representing Olympiad preparation recognition.

    OCS – Olympiadtester Certified Student

    OCS certification recognises structured Olympiad readiness, with many certified students achieving top international ranks and gold medals.
Student celebrating OCS online certification on laptop from Olympiadtester for Olympiad preparation achievement.

Become an Olympiadtester Certified Student (OCS)

OCS is a proctored certification that evaluates subject-specific Olympiad readiness and benchmarks performance against global peers.

Designed for serious competitors, it reflects the level of preparation typically seen among students achieving top international ranks.

Earn Your OCS Certification

Upcoming Olympiads & Competitions

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Building Critical Skills — The Fun Way


Interactive puzzles and structured flashcards designed to sharpen reasoning, expand vocabulary and strengthen general awareness.

Online jigsaw, sliding puzzle, crossword and word scramble representing brain training in Olympiadtester online puzzle hub.

Mental Agility

Online Puzzle Hub

Dive into jigsaw challenges, sliding puzzles, crosswords and word scrambles designed to sharpen thinking speed, strengthen logic and boost mental agility.

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Online vocabulary flashcards, MCQ quizzes and voice-over learning system for Olympiad preparation on Olympiadtester.

Word Mastery

Interactive Vocabulary Flashcards

A structured vocabulary learning system featuring online flashcards, games, MCQ quizzes and voice-over support for deeper retention and active recall.

Start Vocabulary Training
Colorful globe with animals, space, history, technology and landmark icons representing amazing facts and knowledge hub for Olympiad preparation on Olympiadtester.

Curiosity & Knowledge

Amazing Facts Collection

Explore fascinating facts about animals, plants, space, celebrities, history, technology, landmarks, countries and more — designed to spark curiosity and expand everyday knowledge.

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