Start with the entry route
An international competition may require national selection, qualification at another event or registration through a school. Start with the subject you want to explore, then check the route before spending time on an application. These seven examples are a starting point, not a ranking or a complete list. Participation or an award does not guarantee university admission.
Official pages were checked on 25 October 2026 for the descriptions below. This is not a list of open applications: full annual eligibility, country restrictions, fees and deadlines have not been verified for every event. The 2026 IMO, IOI and John Locke entry windows are past. Do not treat an announced future event as an open application. Each organizer must confirm your exact age or grade, country route, total cost and local deadline.
1. IMO — mathematics through a national team
The International Mathematical Olympiad brings together national teams of up to six contestants. Its official overview describes participants as under 20 and not enrolled in post-secondary education. Proof-based problems make it relevant to students who enjoy sustained mathematical reasoning.
Start with the selection organization in your country, not an application to the international final. Confirm the annual age reference date, schooling rules, national eligibility, selection timetable and any preparation or travel costs; these local details are not verified here.
Official source: 1. IMO — mathematics through a national team ↗
2. ISEF — research through an affiliated fair
Regeneron ISEF is a pre-college science and engineering competition. The Society for Science states that participation starts at a Society-affiliated fair: students qualify through local, regional, state or national fairs. A research project needs time for methods, evidence and any required approvals.
Identify the fair serving your location before planning for the international event. Check its exact grade and age rules, geographic eligibility, research approvals, fees and deadlines. This article has not verified a current place or qualification route for any individual student.
Official source: 2. ISEF — research through an affiliated fair ↗
3. IOI — informatics and algorithms
The International Olympiad in Informatics focuses on computing science. It is worth exploring if you enjoy algorithmic problem solving and programming contests. The official regulations page is the starting point for the international framework and participating-country responsibilities.
Ask the relevant national organization about selection and check the current regulations before assuming you can enter. Exact age or grade eligibility, country rules, costs and local deadlines remain to be confirmed. The 2026 event has concluded; this guide does not verify a 2027 application opening.
4. DECA — business through a chapter and association
DECA’s International Career Development Conference includes high-school business competitions. Its official page describes competitors as finalists from chartered associations, with registration handled through association and chapter advisors. This is a school or chapter coordination route to investigate early.
Check membership access in your location, the specific event and grade requirements, qualification steps, fees and advisor deadlines. The page reviewed contained mixed-year conference details, so no exact current deadline or total cost is asserted here.
Official source: 4. DECA — business through a chapter and association ↗
5. World Scholar’s Cup — debate, writing and knowledge
The organizer lists four events: Scholar’s Bowl, Collaborative Writing, Scholar’s Challenge and Team Debate. Use the official rounds calendar to find a suitable location and ask how team formation and progression work.
Before registering, verify the age division, country or venue access, team rules, round-specific fees, travel costs and deadline. None of those entry details is confirmed for your chosen round by this article; an international calendar does not mean every round is available to everyone.
Official source: 5. World Scholar’s Cup — debate, writing and knowledge ↗
6. John Locke Global Essay Prize — check the cycle first
The official 2026 Global Essay Prize page covers subjects including philosophy, politics, economics, history and law. It lists a normal registration deadline of 31 March 2026 and a submission deadline of 31 May 2026, with later paid extensions also now past. The 2026 entry window is closed; a 2027 window has not been verified here.
The 2026 page says entries are welcome from any country and normal entry is free, while late charges and optional event costs can apply. Those statements must not be carried into a future cycle without checking. Verify the age category, current prompt, deadline, total cost and rules on AI assistance before writing.
Official source: 6. John Locke Global Essay Prize — check the cycle first ↗
7. NHSMUN — a Model UN conference, a different kind of activity
NHSMUN describes an educational Model United Nations experience for secondary-school students. It can support research, public speaking and diplomatic simulation. It should not be treated as the same type of standardized academic competition as an Olympiad.
Ask the organizer about school or delegation registration, age and grade eligibility, country or travel restrictions, participation and accommodation fees, and deadlines. These current-entry details are not verified here. Decide whether the learning format fits your goals rather than assuming a conference award has a fixed admissions value.
Official source: 7. NHSMUN — a Model UN conference, a different kind of activity ↗
How to turn this list into a shortlist
Choose one subject and one realistic route. Record the official source, when you checked it, your eligibility questions, the local registration deadline and the full budget. Include preparation, membership, travel and accommodation rather than only an advertised entry fee. If any hard requirement is unclear, ask the organizer before paying.
For writing or research tasks, read the organizer’s authorship and AI rules before using coaching tools. Keep your own work and evidence. The guides below help you compare fit, cost and timing; the Finder is a starting point for discovery, not an eligibility decision.