International Junior Science Olympiad (IJSO)
Enhances Top University Admissions
40,000 participants
The IJSO is a prestigious global science competition for students aged 10-15, focusing on Physics, Chemistry, and Biology. India's rigorous five-stage selection process, managed by IAPT and HBCSE, identifies and nurtures top scientific talent.
Mode
Hybrid
Fee
₹300
Participation format
Individual
Duration
Multi-stage process spanning several months, culminating in a 10-day international event.
Eligibility
Open to Indian students aged 10-15 (typically Grades 8-10) who are studying in Class 10 or below. Participants must hold an Indian passport and meet academic performance criteria, including a minimum of 60% in the current academic year. Nationwide participation is allowed through a multi-stage selection process. Students must not have previously participated in IJSO.
- Grade level
- Grade 8 to 10
- Age range
- 10 to 15 years
- Eligibility region
- Available nationwide across India
- Academic requirement
- Must be studying in Class 10 or below as of November 30 of the exam year for INJSO. Must have at least 60% aggregate marks in Class IX and the current academic year up to the end of the first semester for INJSO. Must not have previously participated in IJSO or undergone higher-level science training programs.
- Prerequisites
- Qualify through the National Standard Examination in Junior Science (NSEJS).
See if your child qualifies.
Rewards and recognition
Award
₹5,000 Cash Prize
Top six students selected for the Indian team at the Orientation cum Selection Camp (OCSC) stage receive cash prizes and books worth ₹5,000.
Prizes
Gold, Silver, Bronze Medals
Winners at the international IJSO receive gold, silver, or bronze medals. Top six students selected for the Indian team at the OCSC stage also receive books.
Certificate
Certificates of Merit
Certificates of merit are awarded to qualifying students at various stages, including the top 10% of students at each NSEJS center, state-wise top 1%, and nationwide top 1%. Participants in the OCSC and the final IJSO team also receive certificates, recognized by IAPT and HBCSE.
Recognized by
Opens doors to
Participation significantly boosts prospects for admission to top universities and research institutions globally, demonstrating exceptional academic prowess and a strong commitment to science, highly valued for undergraduate and postgraduate admissions in science and engineering programs.
Career pathways
Provides a strong foundation and competitive edge for careers in scientific research, engineering, medicine, and other STEM-related fields, opening doors to advanced scientific careers and research opportunities.
Recognition
International Recognition
Skills your child builds
Key dates
- Registration opened
- 21 Aug 2026
- Registration closed
- 14 Sept 2026
- Competition
- 29 Nov 2026
- Results
- 20 Dec 2026
NSEJS Application Deadline (Buffer)
It is highly recommended to complete the online registration and fee payment for NSEJS by this date to avoid last-minute technical issues or server overload.
Admit Card Release (NSEJS)
Admit cards for the National Standard Examination in Junior Science (NSEJS) will be available for download from the official IAPT website. Students should download and print their admit cards well in advance of the exam date.
International IJSO Event (Tentative)
The international round of the IJSO typically takes place in the first week of December. The host country and exact dates for the 2026 event are yet to be officially confirmed.
Indian National Junior Science Olympiad (INJSO) Exam
The second stage of the selection process for qualified NSEJS candidates, the Indian National Junior Science Olympiad (INJSO), will be conducted on this date.
NSEJS Exam Center, Nationwide
How to apply
- 1Indian students must first register for the National Standard Examination in Junior Science (NSEJS) through the Indian Association of Physics Teachers (IAPT) website (www.iapt.org.in).
- 2Subsequent stages (INJSO, OCSC, PDT) are invitation-based for qualified students.
- 3Students can register for NSEJS either through their school (if it's a registered center) or directly online.
- 4Ensure all required documents and fees are submitted by the deadlines.
Rules and guidelines
- Participants must be under 15 years of age as of December 31st of the competition year.
- Participants must hold a valid passport of the country they represent or be registered in that country's educational system for at least one academic year.
- Participants are not allowed to use their own collection of formulae during the competition.
- Participants must adhere to the IJSO statutes and any additional rules set by the host country.
Technology requirements
- Internet access for online registration and information.
- Basic computer literacy for online forms and accessing resources.
- No specific technology required for the exams themselves, but preparation may involve digital resources.
Fees and financial support
Fee details
A registration fee of ₹300 is typically required for the National Standard Examination in Junior Science (NSEJS), which is the first stage. This is a one-time fee for the initial registration. Participation fees for the international event for selected teams are usually covered by the host country or national organizations (HBCSE).
Refund policy
Registration fees for NSEJS are generally non-refundable once paid.
About this opportunity
The International Junior Science Olympiad (IJSO) is a prestigious global competition held annually to inspire scientific curiosity and promote advanced problem-solving abilities among young students. It focuses on an interdisciplinary understanding of Physics, Chemistry, and Biology, encouraging participants to think critically across scientific domains. The competition not only fosters a strong foundation in science but also provides a platform for international exposure and recognition.
In India, the selection process for IJSO is conducted through a well-structured five-stage system coordinated by the Indian Association of Physics Teachers (IAPT) and the Homi Bhabha Centre for Science Education (HBCSE). The stages begin with the National Standard Examination in Junior Science (NSEJS), followed by the Indian National Junior Science Olympiad (INJSO) for shortlisted candidates. Those who clear INJSO attend the Orientation cum Selection Camp (OCSC), where they undergo intensive academic training. This is followed by the Pre-departure Training Camp (PDT) for the final team selected to represent India at the IJSO. The journey concludes with participation in the international round, where students compete on a global stage.
The syllabus for the initial stages broadly aligns with the CBSE Class X curriculum, but the questions are designed to test conceptual understanding and real-world application. Participation in IJSO not only builds academic strength and confidence but also opens doors to future opportunities in STEM fields, enhancing a student’s overall academic profile.
Exam format
- Duration
- 180 minutes
- Format
- Multiple-choice questions, theoretical questions, practical/experimental tasks.
Rounds and format
Stage I: National Standard Examination in Junior Science (NSEJS) - Objective type, multiple-choice questions. Stage II: Indian National Junior Science Olympiad (INJSO) - Objective and descriptive questions. Stage III: Orientation cum Selection Camp (OCSC) - Theoretical and experimental assessments over 2-3 weeks. Stage IV: Pre-departure Training Camp (PDT) - Rigorous theoretical and experimental training. Stage V: Participation in International Junior Science Olympiad (IJSO) - Includes MCQs, theory, and practical exams.
How entries are judged
Performance in theoretical and experimental tests, problem-solving skills, conceptual understanding, and application of scientific principles. For OCSC, 60% weightage for theory and 40% for experiments.
Selection process
Based on merit list from each preceding stage. Top 300 from NSEJS qualify for INJSO. Top 35 from INJSO qualify for OCSC. Top 6 from OCSC form the Indian team for IJSO.
How to prepare
- NCERT textbooks for Classes 9 and 10 Science and Mathematics.
- Previous year question papers of NSEJS, INJSO, and other science Olympiads.
- Reference books for Physics, Chemistry, and Biology at an advanced secondary level.
- Online resources and coaching programs specializing in Olympiad preparation.
Academic details
Difficulty: Advanced
What's covered
The syllabus broadly covers topics equivalent to the CBSE Class X level in Physics, Chemistry, and Biology, with a strong emphasis on fundamental general scientific concepts and interdisciplinary content. It also includes elements of Mathematics relevant to solving science problems. The questions are designed to test conceptual understanding and application rather than rote memorization.
Frequently asked questions
What are the most effective strategies for students to prepare for the NSEJS and subsequent stages of the IJSO?
Effective preparation involves a strong foundation in CBSE Class 9-10 Physics, Chemistry, and Biology, coupled with advanced problem-solving practice. Students should focus on conceptual understanding, interdisciplinary application, and regular practice with previous year's question papers. Participating in mock tests helps in time management and identifying areas for improvement.
How can students manage competitive pressure and performance anxiety during the rigorous IJSO selection process?
Managing competitive pressure is crucial. Students can benefit from mindfulness techniques, maintaining a balanced study schedule, ensuring adequate rest, and engaging in physical activity. Focusing on learning and personal growth rather than solely on results can alleviate anxiety. Seeking guidance from mentors or teachers can also provide valuable support.
What common mistakes do students make during the IJSO preparation and examination, and how can they be avoided?
Common mistakes include rote memorization without conceptual understanding, neglecting experimental skills, and poor time management during exams. Students should prioritize understanding 'why' behind scientific phenomena, practice hands-on experiments, and simulate exam conditions to improve speed and accuracy. Overlooking the interdisciplinary nature of the exam is also a frequent error.
Beyond academic knowledge, what other skills are critical for students to succeed in the IJSO competition?
Success in IJSO requires strong analytical reasoning, critical thinking, and problem-solving skills. Experimental design, data interpretation, and scientific communication are also vital, especially in later stages. Adaptability, resilience, and the ability to collaborate effectively in a team are important for the international round.
How does participation in the IJSO impact a student's long-term academic and career prospects in STEM fields?
Participation in IJSO significantly enhances a student's academic profile, demonstrating exceptional scientific aptitude and commitment. It provides global exposure, fosters a network with peers and experts, and builds a strong foundation for higher education in STEM. This experience is highly valued by top universities and can open doors to advanced research opportunities.
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