Your Ultimate Guide to IJSO Preparation

Comprehensive resources, theory, practice questions, mock tests, and mindset guides – all crafted by former medalists to help you excel.

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About the IJSO Guide

Created by talented students and former IJSO medalists, this guide aims to provide accessible, high-quality resources for students preparing for the International Junior Science Olympiad. Our mission is to level the playing field and help students worldwide excel in science competitions.

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Theory Content

Comprehensive coverage of physics, chemistry, and biology topics in the IJSO syllabus.

Practice Questions

Targeted, topic-wise questions across all IJSO subjects—complete with hints and solutions.

Mock Tests & Quizzes

Practice with full-length, realistic mock exams with answers.

National Junior Science Olympiad Papers

Massive collection of national junior science olympiad papers of different countries.

Study Materials

Top books, notes, and links for mastering all IJSO topics.

Tips & Tricks

Avoid frequent pitfalls and exam traps with this helpful guide.

Mindset & Motivation

Learn from gold medalists how to think, work, and win.

Lab Apparatus Guide

Understand and recognize all key experimental tools in physics, chem, and bio.

Success Stories

Read inspiring journeys of students who triumphed at the IJSO and beyond.

What Students Say

"IJSO Guide felt like an answer to my questions about how to prepare for IJSO and how to continue. The systematic structure showed me what to focus on, while the concise explanations saved time. The sample tasks at the end of each topic helped me get familiar with the question style."

— Fidan Hashimova

IJSO 2025 Bronze Medallist

"I took help from The IJSO guide for its preparation and it helped me a lot. In my opinion it is the best website for the preparation especially Physics and Biology lessons are written with a definite clarity. No other website has such deep notes for the preparation of IJSO."

— Yasir Habib

IJSO 2025 Participant

"I used IJSOGuide to prepare for IJSO 2025 in Russia. It covers all concepts clearly, includes practice questions for each topic, and offers mock tests. Mastering its content can lead to strong results in IJSO and other olympiads."

— Hamza Ali