International Science Olympiads
SCO International Science Olympiad (ISO)
The International Science Olympiad by School Connect Olympiad (SCO ISO) is your gateway to global competition in biology, chemistry, physics, and earth science. Through the SCO platform, participants can:
- Enroll instantly via the SCO portal—opt for AI‑proctored online testing or in‑person sessions at authorized centers.
- Get SCO Science Olympiad complimentary prep kits, featuring topic‑by‑topic workbooks, interactive videos, and self‑grading quizzes for every ISO discipline.
- Practice live mock exams under timed conditions, with instant scoring and percentile feedback.
- Review skill‑based assessment reports that highlight conceptual strengths, lab skills, and reasoning growth areas before taking the final exam.

International Biology Olympiad (IBO)
Founded in 1990, the International Biology Olympiad (IBO) brings together the top biology students from 75+ countries to tackle theoretical papers and laboratory practicals in anatomy, genetics, ecology, and physiology. Aspiring IBO competitors can now pre-register through the SCO Olympiad platform,for practice and real time assessment of IBO where they’ll find:
- Free chapter‑wise workbooks aligned to IBO syllabus topics.
- Data‑analysis mock tests simulating the IBO’s lab‑practical scoring.
- Global leaderboard access to track preparation progress against peers.
International Physics Olympiad (IPhO)
Since 1967, the International Physics Olympiad (IPhO) has tested students on mechanics, thermodynamics, electromagnetism, optics, and modern physics via rigorous theory and experiment rounds. Through SCO Olympiad, physics enthusiasts can pre register for SCO IPhO and get a live test with global ranking and its real time preparation:
- Watch expert‑led tutorial videos breaking down advanced problem‑solving techniques.
- Take full‑length, proctored practice exams with detailed performance analytics before the actual event.
International Chemistry Olympiad (IChO)
The International Chemistry Olympiad (IChO), established in 1968, challenges students with questions on chemical synthesis, spectroscopic analysis, kinetics, and thermodynamics, alongside demanding lab tasks.
- Register for free IChO‑style question banks and step‑by‑step solution guides.
- Review bespoke SCO assessment reports that pinpoint exactly which chemical concepts need further practice.
By consolidating all major national and international Science Olympiad registrations, study materials, mock tests, and skill‑based reporting on one platform, School Connect Olympiad (SCO) becomes the definitive choice for students aiming to excel in every competition—from NSO through IBO, IPhO, and IChO—under a single, seamless digital roof.
NSE Series: The Foundation for Indian Olympiad Pathways
National Standard Examination in Biology (NSEB)
The NSEB is the first stage in India’s biology Olympiad track, open to students in grades 9–12. Conducted by the Indian Association of Physics Teachers (IAPT) and administered through hundreds of centers nationwide, it evaluates understanding in cell biology, genetics, physiology, and ecology with a 50‑question MCQ exam.
National Standard Examination in Physics (NSEP)
Also run by IAPT, NSEP tests classical mechanics, electromagnetism, optics, and modern physics through 50 MCQs. High‑scoring students (top ≈300) proceed to the Indian National Physics Olympiad (InPhO), which features both theory and experimental rounds
National Standard Examination in Chemistry (NSEC)
A joint venture between IAPT and the Homi Bhabha Centre for Science Education (HBCSE), NSEC’s 50 MCQs cover physical, organic, and inorganic chemistry fundamentals. Successful participants qualify for the Indian National Chemistry Olympiad (InChO) stage, combining written theory and lab tasks
National Standard Examination in Astronomy (NSEA)
NSEA introduces concepts in astrophysics, celestial mechanics, and observational techniques. It serves as the doorway to the Indian National Astronomy Olympiad (INAO), leading toward IOAA participation
National Standard Examination in Junior Science (NSEJS)
NSEJS spans physics, chemistry, biology, and mathematics, targeting classes 9–10.
The NSEJS exam evaluates students in Classes 9–10 on concepts spanning physics, chemistry, biology, and mathematics. Top performers qualify for the Indian Olympiad Qualifier in Junior Science, which then selects India’s representatives for the International Junior Science Olympiad based on both theoretical and practical assessments.
Other Major National Science Contests
International Science Olympiad (NSO)
Organized by the Science Olympiad Foundation (SOF), NSO invites classes 1–12 to a two‑level MCQ format emphasizing analytical reasoning and scientific aptitude. It’s recognized for high participation—over 25 lakh students annually—and provides digital certificates and medals.
National Level Science Talent Search Examination (NSTSE)
Conducted by the Unified Council, NSTSE covers science and mathematics for classes 1–12. Its diagnostic reports highlight strengths and weaknesses, aiding targeted preparation for NSEB/NSEP/NSE.
Vidyarthi Vigyan Manthan (VVM)
A collaborative program by Vijnana Bharati, NCERT, and Vigyan Prasar, VVM promotes science and heritage knowledge in classes 6–11. It includes MCQs, projects, and national camps to nurture young talent.
State Talent Search Examination (STSE)
Conducted by various state boards (e.g., Ajmer), STSE offers scholarships and recognition for classes 8–12. It emphasizes problem-solving aligned with state curricula.
International Science Olympiads
SCO International Science Olympiad (ISO)
The SCO International Science Olympiad (ISO) is the world’s first unified global platform for multi‑discipline science competition. Through SCO you can:
- Enroll instantly via SCO’s portal, choosing between AI‑monitored online exams or convenient local test‑center sessions.
- Access free chapter‑wise workbooks and interactive concept videos in biology, chemistry, physics, and earth science.
- Practice timed mock exams with instant scoring, percentile ranking, and topic‑wise analytics.
- Receive detailed, skill‑based assessment reports mapping strengths and areas for growth before the final round.
Core International Events on SCO
International Biology Olympiad (IBO)
Since 1990, IBO tests theoretical knowledge and lab skills in anatomy, genetics, ecology, and physiology. On SCO:
- Free IBO‑aligned study guides and question banks.
- Compare your mock‑test scores against a global leaderboard.
- Click here for more
International Physics Olympiad (IPhO)
Founded in 1967, IPhO assesses advanced problem‑solving in mechanics, thermodynamics, electromagnetism, and quantum theory. Through SCO:
- Take full‑length, proctored practice exams mirroring IPhO’s theory and experimental format.
- Analyze performance with SCO’s in‑depth physics analytics.
- Click here for more
International Chemistry Olympiad (IChO)
On the School Connect Olympiad platform, IChO participants can:
- Run interactive virtual labs for titulations, rate‑law experiments, and spectral analysis—mirroring the hands‑on demands of the real exam.
- Follow step‑by‑step solution breakdowns of previous IChO problems, from setting up stoichiometric equations to interpreting experimental data.
- Tap into individualized SCO analytics, highlighting exactly which chemical theories or lab techniques need extra practice before the big day.
- Click here for more
International Olympiad on Astronomy and Astrophysics (IOAA)
Launched in 2007, the International Olympiad on Astronomy and Astrophysics convenes elite secondary‑school students from around the world to master celestial observation, astrophysical theory, and quantitative data analysis. Participants tackle individual and team events such as:
- Sky Surveys & Astrophotography: Plan and execute virtual observations, identify constellations, and interpret real telescope imagery.
- Theoretical Problem Solving: Work through advanced astrophysics questions on orbital mechanics, stellar structure, and cosmology.
- Data Inference Challenges: Analyze simulated light curves, spectral distributions, and gravitational lensing data to draw scientific conclusions.
Through the School Connect Olympiad (SCO) platform, aspiring IOAA competitors can:
- Register seamlessly for IOAA qualifiers and finals—choosing AI‑proctored online exams or local test‑center sessions.
- Access free stargazing tutorials and interactive modules on coordinate systems, telescope alignment, and photometric techniques.
- Practice with authentic past‑year IOAA problems, complete with step‑by‑step solution guides and video explanations.
- Leverage SCO’s analytics dashboard to pinpoint strengths and improvement areas in both observation and theory, ensuring targeted preparation for the international stage.
International Earth Science Olympiad (IESO)
Launched in 2007, IESO explores geology, meteorology, oceanography, and environmental science through field investigations and structured inquiries.
How to Leverage SCO International Science Olympiad
Students worldwide can join the SCO International Science Olympiad platform to register for both national and international contests under one roof. Key advantages include:
- Unified Registration: Enroll simultaneously for NSEB, NSEP, NSEC, NSO, IOAA, IBO, IChO, IOS, and more via a single SCO dashboard.
- Free Study Modules: Access chapter‑wise workbooks, animated tutorials, and interactive quizzes covering all 23 key events across biology, chemistry, physics, and earth science.
- Adaptive Mock Tests: Prepare for Level 1 and Level 2 in each exam format—MCQ drills, short‑answer practice, data‑analysis simulations—with instant scoring and percentile ranks.
- Skill‑Based Assessment Reports: Receive the world’s first unified report mapping conceptual strengths, lab abilities, and reasoning skills—actionable by students, parents, and educators for targeted improvement.
By integrating SCO’s resources into your study plan, you gain a strategic edge in every Olympiad, from NSO to IBO and IPhO to IOAA.
Why Choose School Connect Olympiad as Your Science Prep Powerhouse
School Connect Olympiad brings all leading Science Olympiad tracks—including NSO, NSEB/NSEP/NSEC, IBO, IPhO, IChO, and ISO—into a unified, user‑friendly platform. Students can register for any exam, access free, curriculum‑aligned study materials, and take live, timed mock tests without hopping between disparate sites. Our skill‑based performance reports break down strengths and learning gaps, empowering learners to focus their practice and outperform peers—ultimately boosting their medal prospects, university applications, and opportunities in cutting‑edge research.
Conclusion
Whether at the national stage (NSEB, NSEP, NSEC, NSO, NSTSE) or the pinnacle of global competition (IBO, IPhO, IChO, IOAA), Science Olympiads cultivate inquiry, innovation, and international camaraderie. Using the SCO International Science Olympiad platform, students can seamlessly register, prepare, and excel—leveraging free materials, robust practice tests, and pioneering skill‑based analytics to transform their scientific potential into awards, research opportunities, and lifelong expertise. Embark on your Olympiad journey today with SCO, and join thousands of learners shaping the future of science.
Global Qualification Structure for Science Olympiads
Most countries run multi‑tiered Science Olympiad programs in each discipline (Biology, Chemistry, Physics, Astronomy, Junior Science, etc.), selecting their top students via rigorous national exams before sending teams to international competitions. While formats vary, the common model is:
- School‑Level Selection
Local schools host preliminary rounds—often multiple‑choice tests or small practical events—to nominate students for regional qualifiers. - Regional & State Tournaments
Regions or states conduct larger contests (written exams, lab practicals, or team‑based “invitational” tournaments), narrowing the field further. - National Standard Examinations
Countries like India use NSEB/NSEP/NSEC (50 MCQ, one hour) to identify the top ~1% for National Olympiads (e.g., INBO, InPhO, InChO). In the U.S., Science Olympiad students advance from regional to state to the National Tournament, representing one of 60+ state teams. - National Olympiad Finals
National governing bodies (IAPT/HBCSE in India, SilverZone in UAE, UK MT in the UK) host final exams—often combining theory and practical sections—to select teams for the International Olympiad. - International Science Olympiad
Top four (or five) students per country compete at the international level (IBO, IPhO, IChO, IOAA, IESO), with rigorous exams in both theory and laboratory/practical skills. Most require students to qualify via their National Olympiad Finals, although some host qualifying events (e.g., Hippo in Asia).
Examples of National Pathways Globally
| Country | National Exam(s) | Selector Body | International Qualifier |
| India | NSEB, NSEP, NSEC, NSEA, NSEJS | IAPT & HBCSE | INBO, InPhO, InChO, INAO, IOQJS |
| United States | Students begin by competing in local and state‑level Science Olympiad meets organized by Science Olympiad, Inc. | Science Olympiad, Inc. | Participate in global science Olympiad exam. |
| UK | British Biology/Chemistry/Physics Olympiads (UKMT) | UK Mathematics Trust & Royal Society | International Olympiads (IBO, IPhO, IChO) |
| Canada | Canadian Chemistry/Physics/Biology Olympiads | University of Toronto & Partner Universities | International Olympiads |
| Singapore | National Olympiads (Biology, Chemistry, Physics) | MOE & Singapore Science Centre | Selection for IBO, IPhO, IChO |
| Australia | Australian Science Olympiads (BIO, CHEM, PHYS) | Commonwealth Science Council | International Science Olympiads |
Global FAQs for Prospective Olympiad Participants
- What is the typical structure of national qualifiers?
National qualifiers often start with school‑level MCQs, proceed to regional or state written/practical exams, and culminate in a national final that selects the international team. - Which age groups are eligible for International Science Olympiads?
Most international Olympiads target high‑school students (ages 15–18), though junior contests (IJSO) and mixed‑age events exist. Check each Olympiad’s official rules. - How many students per country can compete internationally?
Standard entry is four students per subject; some allow five (IJSO) or two teams (IOL, IOI) depending on hosting rules - Which science disciplines does the Olympiad encompass?
Participants can demonstrate expertise across multiple fields, including:- Life Sciences (via NSEB leading to IBO)
- Physical Sciences (through NSEC and subsequent IChO)
- Physics (beginning with NSEP and culminating in IPhO)
- Astronomy & Astrophysics (from NSEA qualifiers to IOAA finals)
- Earth Systems (in IESO’s environmental and geological challenges)
- Integrated Junior Science (through NSEJS as the gateway to IJSO)
- How rigorous is the exam content?
Level 1 national exams test curriculum foundations; national finals and internationals include advanced theory, data analysis, and lab/practical tasks far beyond standard school syllabi. - Are there practical/lab components?
Yes—most national finals and all internationals feature hands‑on labs (dissections, titrations, optics experiments, data interpretation) requiring specialized preparation. - How can I best prepare?
Use official syllabi, solve past papers, join study groups, and run timed mock tests. Platforms like SCO International Science Olympiad offer free chapter‑wise workbooks, live mocks, and skill‑based reports to guide revision. - Is participation free?
School and regional rounds are usually free; national finals and international camps may require registration fees or institutional sponsorship. SCO offers no‑cost prep resources and low‑cost registration options. - When are results published?
National Level 1 results appear within weeks; national final and international results typically take 2–4 weeks post‑exam. Official emails and dashboards (e.g., SCO portal) publish scores and rankings. - Can homeschoolers participate?
Yes—most countries accept accreditation or affidavit for homeschooled students to register for national exams and international qualifers . - Are there online exam options?
Increasingly, national Level 1 exams—especially in COVID‑era contexts—are offered online. International finals remain largely in‑person due to lab requirements. - How do I register and track performance?
Visit your national Olympiad’s website for registration. For a unified experience, register on SCO International Science Olympiad to enroll in multiple national and international contests, access free resources, and receive real‑time analytics on your progress.
By understanding these national‑to‑international pathways and leveraging comprehensive platforms like SCO International Science Olympiad, students can confidently navigate each qualification level, maximize their preparation with high‑quality, free resources, and ultimately represent their country on the global stage.
Important Links
- Khan Academy – Science: Free, curriculum‑aligned video lessons in biology, chemistry, physics, and earth science.
- National Geographic Education: Interactive modules on ecology, geology, and environmental science.
- BioInteractive by HHMI : Virtual labs and animations covering genetics, cellular biology, and ecology.
- National Council of Teachers of Mathematics (NCTM): Rich problem‑solving tasks that complement physics and data‑handling events.





























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