IEO Divisions and Rounds, Explained: How the Greater China Route Is Structured

Before you enter the International Economics Olympiad (IEO) from Greater China, it helps to understand two things the head-term guides skip: entrants are sorted into divisions by level, and only some divisions can progress all the way to the global final. The rest compete through regional and invitational rounds (such as the Singapore and Hong Kong international invitationals). This guide maps that structure so you enter the right division and know where it can take you. As always, this is an independent guide — confirm current divisions, rules and dates on the official IEO channels (ieo-official.org).

The divisions, by level

Within the Greater China route — run as the IEOC financial-literacy summit series — entrants are grouped into three divisions. The differences that matter are the level of economics assumed, the language you sit in, whether you need a team, and — critically — which division can reach the national team:

Division Grade Language How you enter Preliminary covers Ceiling
JUNIOR-SL
Rookie (Regular)
G9 and below Bilingual Team of 3–5, or individually Basic microeconomics, personal finance International invitational rounds
JUNIOR-HL
Rookie (Senior)
G9–G12 Bilingual Team of 3–5 Basic micro and macro, personal finance Hong Kong and Singapore invitationals
SENIOR
Professional
G9–G12 English only Team of 3–5 Advanced micro and macro, international economics National team selection

Three practical consequences follow. First, if your goal is the global final, SENIOR is the only division that carries a route to the national team — the Junior divisions are real competitions with real international invitationals, but different ceilings. Second, the Junior divisions are sat bilingually and SENIOR is English-only, so a student whose economics is ahead of their English has somewhere sensible to start. Third, and most often missed: you form your team before you sit the preliminary, not after — the published entry sequence is register, choose a division and complete your team, unlock the academic materials, then sit the online preliminary. JUNIOR-SL is the one division you may enter alone.

All entrants must be under 20 on the eligibility date. The division structure above is as set out in the 2027 China-route handbook; formats have changed between cycles before, so confirm the current definitions on the official channels before you commit a team to one.

The three IEOC divisions for the Greater China route: JUNIOR-SL for grade 9 and below, bilingual, entered as a team of three to five or individually, covering basic microeconomics and personal finance, reaching international invitational rounds; JUNIOR-HL for grades 9 to 12, bilingual, team of three to five, covering basic micro and macro plus personal finance, reaching the Hong Kong and Singapore invitationals; and SENIOR for grades 9 to 12, English only, team of three to five, covering advanced micro and macro plus international economics, and the only division from which the national team is selected.
The three divisions and their ceilings, per the 2027 China-route handbook. The IEO itself is supported by Eric Maskin; competition rules and eligibility remain on ieo-official.org.

Regional and invitational rounds

One reason the IEO confuses newcomers is that “the IEO” is not a single sitting. A Greater China entrant progresses through a sequence — a Preliminary, then a national/regional round, and for some divisions an international invitational (the Singapore and Hong Kong invitationals are the best-known), with the global final as the top of the funnel for the Professional route. Two takeaways:

  • The invitationals are real, ranked international rounds in their own right — not warm-ups — and are where many strong Rookie-division students earn their headline result.
  • The global final is the ceiling for the Professional division only. If reaching it is your goal, that constrains your division choice from the start.

For the competition's three international components in detail, see our guide to what the IEO is and the business-case round.

The IEO round sequence from a Preliminary, to a national or regional round, to international invitationals such as Singapore and Hong Kong, up to the global final; Rookie divisions top out at the invitationals while the Professional division continues to the global final
Where each division tops out, per the 2027 China-route handbook. Hanlin Education editorial.

How honours are awarded at the Preliminary

At the Preliminary economics test, honours are typically awarded in three separate ways — which is why two students with similar scores can come away with different-looking results:

Honour Basis Approx. share (confirm officially)
Individual achievement certificate Individual total at or above a set score (around 70 out of 100 in a recent cycle) ~35–40%
Team total honour Team total in the top band (first / second / third) ~ top 20%
Individual subject honour Individual total in the top band (first / second / third) ~ top 15%

Treat those cut-offs as a recent-cycle guide, not a fixed rule: score thresholds and percentages are set by the organiser each year and can move. The structural point is durable — there are separate individual and team honours, so it is worth understanding which one your division and goals point toward.

Choosing your division

Work from your goal backward. If you want a shot at the global final, enter the Professional division and prepare for its case-analysis and team element as well as the written test. If you are newer to economics or in a lower grade, a Rookie division is a strong, well-matched entry point — with international invitationals as a genuine target rather than a consolation. Either way, get the division right first: it decides both the level you are tested at and the ceiling you can reach.

The season, end to end

Until now this site has described the Greater China route in the abstract, because the calendar was not published in a form we could point at. The 2027 handbook sets it out, and the shape is worth internalising early, because the first deadline is the one students miss:

Stage When Where What happens
Registration Early-bird closes 1 October Online Register, pick a division, form your team
Preliminary round December 2026 Online, nationwide Micro, macro and personal finance, scoped to your division
Annual summit
the national round
Spring 2027 Eastern China Economics and finance papers, a business proposal presentation, a social-innovation showcase, data-science and AI workshops, a case poster, and a timed pitch round for the champion teams in SENIOR
International showcase Summer 2027 Hong Kong, Singapore, Australia and others Strong teams travel to invitational rounds

Read that calendar backwards and the planning problem becomes obvious. The summit is where the national team is chosen, the preliminary sits in December, and team formation happens before that — so a SENIOR entrant who starts looking for two or three teammates in November has already lost the autumn. Dates and fees are as published in the 2027 handbook; confirm them on the official channels before you plan around them.

Where the route has led

The China-route organiser publishes an alumni page, which is the closest thing to an outcome record this pathway has. Read it for what it shows — that students who went deep on this route were serious enough to reach national teams and international invitationals — and not as a claim about admissions. No competition result causes an offer, and nobody, ourselves included, can tell you what any single line here contributed:

Alumnus Now at Competition record as published
Khow X Harvard University Malaysian national team, IEO 2025; individual bronze at the 2025 global final
Eric X University of Pennsylvania Chinese national team, IEO 2025; individual gold at the 2025 global final
Le L University of Cambridge Chinese national team, IEO 2025; individual gold at the 2025 global final
Ziyue X Stanford University Chinese national team, AAEO 2024
Yiqiu Z University of Oxford Chinese national team, AAEO 2024
Zixin Y Carnegie Mellon University Chinese national team, AAEO 2025
Donglin L University of Chicago Former Singapore-round entrant; led a school economics society
Zhengjun S The University of Hong Kong Hong Kong invitational; individual distinction, 2026
YIWEN S Imperial College London IEOC 2025 participant

Two things in that table are worth noticing rather than skipping. Almost every entry runs through a national team or an international invitational rather than through the preliminary alone — which is the practical argument for choosing the division whose ceiling matches your ambition. And the routes are plural: an invitational in Hong Kong or Singapore appears about as often as the global final does. Names and destinations are as published by the organiser.

Frequently asked questions

How many divisions does the IEO have in Greater China?
Entrants are typically sorted into three: Rookie (Regular), Rookie (Senior) and Professional, by level of economics. Confirm the current definitions on ieo-official.org.

Which IEO division can reach the global final?
The Professional division is the route toward the global final; it adds case analysis and a team element to the written test. The Rookie divisions compete through regional and invitational rounds.

What are the Singapore and Hong Kong invitationals?
They are ranked international invitational rounds within the IEO structure — real competitions where many Greater China students earn a headline result, distinct from the global final.

How are IEO honours decided?
At the Preliminary, honours are awarded separately for individual achievement, team total, and individual subject placing. Exact score thresholds and percentages are set officially each year.

This is an independent guide to the International Economics Olympiad for Greater China students, operated by Hanlin Education. It is not affiliated with, endorsed by, or the official site of the International Economics Olympiad Association (ieo-official.org). Division definitions, round structures, dates and honour thresholds are set by the organiser and the regional programme and change each year — always confirm current details on the official channels. Confirmed errors are corrected within 7 working days.