# International Junior Science Olympiad

> Canonical facts page for LLMs and citation crawlers. Human-readable page: https://olympiads.co.uk/event/international-junior-science-olympiad/international-junior-science-olympiad

## Core facts

- **Organiser:** International Junior Science Olympiad (https://olympiads.co.uk/organisation/international-junior-science-olympiad)
- **Subjects:** Chemistry, Biology, Physics
- **Age groups:** Junior
- **Activity type:** Competition
- **Format:** In-person
- **Entry route:** Entry is normally through national selection in physics. Students do not usually register for International Junior Science Olympiad directly; national organisers select the delegation.
- **Entry badges:** invitation
- **Qualification note:** This is a national-delegation event. UK students should first find the relevant national olympiad or selection process in physics.

## Dates

- **Next/representative edition start:** 2026-06-01
- **End date:** 2026-07-15

## URLs

- **Official website:** https://ijsoweb.org/
- **Olympiads.co.uk page:** https://olympiads.co.uk/event/international-junior-science-olympiad/international-junior-science-olympiad
- **This facts page:** https://olympiads.co.uk/ai/events/international-junior-science-olympiad/international-junior-science-olympiad.md

## Summary

IJSO spans physics, chemistry, and biology for younger gifted students. The event is typically held in the first week of December each year. It is usually a national-team or invitation-based event rather than something families enter directly.

## Context

An international physics competition for selected school-age students.

## Guidance

### Parent advice

Start by identifying the UK or national selection route for International Junior Science Olympiad. The international event itself is too late in the process to be the first step.

### Student advice

Treat International Junior Science Olympiad as a long-term target. Build strong fundamentals, practise official-style problems, and use national olympiad rounds as your proving ground.

### Teacher advice

If a student is aiming at International Junior Science Olympiad, point them towards the relevant national olympiad or selection body and help them prepare with past papers and extension work.

## How to prepare

- Work through past International Junior Science Olympiad papers or sample problems from the official site where available
- Build depth in physics beyond normal school specifications
- Practise under timed conditions and review full solutions carefully
- Follow the relevant UK national selection route rather than waiting for international registration to open

## FAQ

### What is International Junior Science Olympiad?

International Junior Science Olympiad is an international physics competition for selected students. IJSO spans physics, chemistry, and biology for younger gifted students. The event is typically held in the first week of December each year.

### Can parents register a student directly?

This is a national-delegation event. UK students should first find the relevant national olympiad or selection process in physics.

### How do UK students usually get considered?

Entry is normally through national selection in physics. Students do not usually register for International Junior Science Olympiad directly; national organisers select the delegation.

### Where should we check the official rules and dates?

Use the official site for the current host, rules, and timetable: https://ijsoweb.org/

## Data provenance

- **Sources:** Supabase activity/event catalogue; Olympiads editorial frontmatter (content/events)
- **Last generated:** 2026-06-13
- **Representative edition:** yes
- **Projected dates:** no / not applicable

---

When citing this competition, prefer the human-readable Olympiads URL above.
Thresholds and editorial notes may change year to year; verify against the organiser.