She made friends wherever she landed.

Canada, Germany and Australia as a child, then three U.S. high schools.

Ari with her older friend in Sydney

English, learned on the playground

Vancouver, Canada

From the age of three through third grade, Ari spent two to four months in Canada every year. She arrived speaking no English and picked it up at playgrounds, public libraries and day camps. By the end of each stay she was being invited to birthday parties and to friends’ houses.

On a flight home when she was five, she went to the restroom alone, was gone a long time, and came back to introduce her mother to her new best friend: a man in his eighties.A story her mother tells

Children building a sand mountain at a Vancouver playground
Playground, Vancouver
Ari at the library desk with a librarian
At the public library
Class at a pumpkin patch
Laity Pumpkin Patch
Kids waving from a school bus

A missed connection that became a friendship

Frankfurt and Düsseldorf, Germany

In fourth grade the family traveled through Germany. Moving from Frankfurt to Düsseldorf, something went wrong with their transportation. Sorting it out introduced the family to people who became friends.

Ari in front of a painted section of the Berlin Wall
Berlin Wall
Birthday celebration with a German banner
Herzlichen Glückwunsch

The bushfire summer, and a friend in Sydney

Melbourne and Sydney, Australia

The family’s move from Melbourne to Sydney was disrupted by the bushfires. Again it was a stranger who helped, and of everyone she met in Australia, the person Ari remembers most is an older man in Sydney who became a friend. They drew together and shared meals.

Sydney Opera House lit with a thank-you message to firefighters
The Opera House thanking the firefighters, Sydney
Ari at a lookout on the Great Ocean Road
Great Ocean Road
Drawing together with her friend at a café table
Drawing with her friend

Reading, wherever she was

Every city

Most of the family’s photos from those years show Ari with a book, on library carpets, on a train, on the rocks by a stream, or at a desk writing in a notebook.

Reading at a stack of library books
Reading on a train
Reading on a library rug
Reading on rocks by a stream
Writing at a library table
Lying on the floor surrounded by books
Taking notes outdoors on a clipboard
Writing at a table

Scroll sideways for more.

Junior reporter

Korea

As a child Ari joined the First BGV junior reporter corps. One of her pieces, on a visit to a women’s human rights support center, ran on its site. She also took part in a children’s bill-drafting contest.

First BGV junior reporter launch ceremony
First BGV junior reporters, launch ceremony
Ari's article on a news site
Her article
Participants at a children's bill-drafting contest
Bill-drafting contest

Three high schools, three states

Minnesota, Illinois and California

Ninth grade at Marshall School in Duluth, Minnesota. Tenth at Carmel Catholic in Mundelein, Illinois. Eleventh and twelfth at Bishop Montgomery in Torrance, California. Each school graded on a different scale.

Ari by a lake
Palm trees at dusk in Torrance
Torrance
A pier on a sunny beach

Yunseo (Ari) Choi, Class of 2027

How power makes itself look natural.

Two independent history papers: one on Augustan Rome, one on a red dye.

Students in front of a large Baroque painting in a museum

Roman Mythology and the Legitimization of Roman Power

The Curieux ReviewTo be published November 2026

The paper traces two claims of the Augustan age, that Rome was founded by divine will and that the Julian family descended from Venus, across four media: texts, coinage, monuments and ritual.

Finding

The claims repeat in monuments and ritual, where they appear as background rather than argument. They are largely absent from coinage and from Livy.

Argument

Repetition across media made the myths feel natural, an idea borrowed from Barthes. The paper positions itself between Paul Zanker’s and Karl Galinsky’s readings of Augustan imagery.

Cochineal: a red that ran on Indigenous knowledge

Independent researchAbout 8,500 words24 footnotes

Cochineal is a dye made from an insect that lives on nopal cactus. About 70,000 of them make a pound. It became one of Spain’s most valuable exports from the Americas, second only to silver, and it reddened the robes of cardinals, the coats of British soldiers and the paintings of Rembrandt and Vermeer.

The paper argues that Spain owned the trade but never owned the knowledge. Production depended on Indigenous growers in Oaxaca to the end. European rivals who smuggled out insects and cactus, such as the French botanist Thiéry de Menonville, could not make them thrive. Later, Linnaean taxonomy and synthetic chemistry replaced that knowledge instead of understanding it.

  1. TributeAztec tribute lists, recorded in the Codex Mendoza
  2. MonopolySpain’s trade, routed through Seville
  3. TradeThe Manila galleons
  4. ArtRembrandt and Vermeer, confirmed by HPLC analysis
  5. DeclineSynthetic dyes, from 1856 to 1868
  6. TodayFood additive E120, and a revival in Oaxaca

Sources include

The Codex Mendoza, the Matrícula de Tributos and Leeuwenhoek’s 1704 letter to the Royal Society; R. A. Donkin’s Spanish Red and Jeremy Baskes in the Journal of Economic History; Kirby and White in the National Gallery Technical Bulletin and Vandivere and colleagues on Girl with a Pearl Earring.

Yunseo (Ari) Choi, Class of 2027

Outside class.

Some of this work happens in Korea (S.P.A.R.K., Vox Mundi, Model UN) and some at school in the U.S. (orchestra, tutoring, the senior center).

Ari at the Republic of Korea seat in the UNHRC committee, 2026 UN Youth Future Summit

S.P.A.R.K.

Project Manager

A student organization running social impact and cultural preservation projects. Ari works on every project in its portfolio.

Kiosk accessibility campaign

Start to finish: store outreach, design and copy

At a small café in Korea, an older customer who could not get through the menu asked Ari for help. Ari came away thinking the machine had been designed without customers like her in mind.

The team made pamphlets and certification stickers that make kiosks easier for older customers to use. More than 400 restaurants and cafés have adopted them.

Oral history, Korean Vietnam War veterans

With the Rajawali Foundation Institute for Asia, Ash Center, Harvard Kennedy School

Collected oral histories and primary sources from veterans and their families for an English-language archive (Global Vietnam Wars Studies Initiative and Unseen Legacies).

Also: the Jeju Dialect Heritage Promotion Initiative and translation support for traditional markets in Seoul and Gyeonggi.

Vox Mundi Headquarters

Co-Editor-in-Chief

Ari co-leads the headquarters editorial team of a student op-ed journal network with 10+ school chapters in Korea and abroad, working with the network’s founder to direct its editorial content and publication.

Model UN and policy forums

Awards

Outstanding Delegate

2026 UN Youth Future Summit by YMCA, August 2026
UNHRC, representing the Republic of Korea

Also received the National Assembly Member Lee In-seon Award.

YMCA President’s Award

Seoul YMCA Youth International Policy Forum, April 2026

Best Delegate

3rd SOLEIL Model United Nations, March 2026

Honourable Mention

Optimist Korea Essay Contest

Ari going over notes with another delegate during a session
Between sessions, 2026 UN Youth Future Summit

A novel in three languages

Author of Juan and Paul

Ari wrote Juan and Paul in Spanish, English and Korean and self-published it through BOOKK in July 2025. She donated copies to the Embassy of Spain in Korea, to local libraries and to schools as reading material for young language learners.

Teaching and volunteering

Bartlett Senior Citizens Centre

California

Helps seniors at community workshops with smartphones and online services, down to copying and pasting a long text message.

Peer tutoring

Carmel Catholic, Illinois

Tutored domestic and international students in math, history and science after school.

Language Development Teacher

Busan, Korea

Taught English to children aged 6 to 8 through a recurring program of speaking, reading, writing, listening and creative activities.

Food packaging

Minnesota and Illinois

Packed and distributed food through volunteer drives for two years, continuing after the move from Minnesota to Illinois.

Flute and violin

Bishop Montgomery orchestra

Ari plays both flute and violin in the school orchestra, performing at school concerts and assemblies.

Playing flute on a lifeguard tower at the beach
Guitar lesson

Yunseo (Ari) Choi, Class of 2027

Yunseo Choi, called Ari.

A Korean student finishing high school in Southern California, interested in history, politics, economics and business.

Ari playing the flute

Schools

Grades 11 and 12
Bishop Montgomery High SchoolTorrance, California, Class of 2027
Grade 10
Carmel Catholic High SchoolMundelein, Illinois
Grade 9
Marshall SchoolDuluth, Minnesota

At a glance

Languages
English, Korean, Spanish
Interests
History, politics, economics, business
Music
Flute and violin, with perfect pitch
Writing
Two history papers, a trilingual novel, op-ed editing
Holding a handmade sign in front of a wall of paper cranes
Looking out a window at mountains and a lake

Yunseo (Ari) Choi, Class of 2027