Most international schools in Seoul offer some AP courses. YISS has built its entire High School around the American model at scale. Twenty-four AP subjects across the major disciplines, plus the full AP Capstone diploma (AP Seminar in Grade 11, AP Research in Grade 12). The school does not run an IB program; Sixth Form students complete a U.S. High School Diploma with AP at the top of the curriculum stack.
For a Taiwanese family relocating to Seoul on a parent's work posting, this framing matters. If the family's long-term pathway is U.S. universities, YISS has the academic architecture to support that directly, including SAT preparation as part of the school culture and a college counselling approach shaped around U.S. admissions. The school's 2024 figures show eighty-eight percent of AP-enrolled students scoring three or higher, and an average SAT score of 1407.
YISS sits in Yongsan-gu, Seoul's most established foreign-resident district. The main entrance is a short walk from Hangangjin Station on Subway Line 6. Itaewon, the historic international-community hub, is a few minutes away. The broader Yongsan ecosystem has been built around the city's expatriate community for decades: international grocery stores, embassies, English-speaking services, multiple international schools. A Taiwanese family relocating to Seoul will find the logistical side of daily life simpler here than almost anywhere else in the city.
The school operates under an unusual governance arrangement. YISS is owned by the Korea Foreign Schools Foundation (KFSF), a Korean government-sanctioned non-profit established in 2004, and run in partnership with the Network of International Christian Schools (NICS), a U.S.-based Christian schools association. This dual identity produces a dual-track school. At Middle and High School, families choose between the NICS program (Bible class, weekly chapel, Christian character education) and the Oasis program (philosophy, weekly assembly, non-religious character education). The choice is made at enrollment. Both tracks use the same academic curriculum; the difference is in the character-education layer around it.
One governance question matters for families enrolling in 2026. The KFSF–NICS operating agreement is reported to expire this year. The school's post-2026 structure, whether the agreement is renewed, restructured, or allowed to lapse, is not confirmed in the school's public materials as of April 2026. Families who care about the NICS-Oasis distinction, or about the school's Christian character more broadly, should confirm the current status directly with admissions before committing.
YISS opened in 1990 as a private, coeducational day school serving Seoul's expatriate community. Through the 1990s and early 2000s, demand from the city's foreign-resident families outpaced the capacity of existing schools. In 2004 the Korean government approved the creation of the Korea Foreign Schools Foundation (KFSF) as a non-profit to own and administrate YISS. The current purpose-built campus in Hannam-dong opened in 2006, and the school has remained there since.
The school operates under a joint agreement between KFSF and the Network of International Christian Schools (NICS), a U.S.-based association that provides the educational framework and much of the faculty recruitment pipeline. This gives YISS its distinct Christian character on the NICS track, alongside the non-religious Oasis track added to serve families outside that framework. Both tracks sit inside the same Korean government sanction as a foreign school.
The school's stated mission is to instill in each student a passion for truth, a commitment to excellence, and an appreciation for diversity. Campus improvements have continued through the current occupancy: a 2017 entrance renovation with new gate and terraces, and a 2021 kindergarten renovation built around play-based learning.
YISS teaches a U.S. college-preparatory curriculum across three divisions. Elementary runs Kindergarten through Grade 5, Middle School runs Grades 6 through 8, and High School runs Grades 9 through 12. At Middle and High School, families choose between the NICS program (with Bible class and weekly chapel) and the Oasis program (with philosophy and weekly assembly). The academic curriculum is the same across both tracks. Mandarin is taught as a specialist subject at Elementary; availability at Middle and High School is a point families should confirm with admissions.
YISS publishes AP and SAT performance figures on its school homepage each year. The school compares its results against worldwide averages rather than peer international-school averages, which inflates the comparison but makes the numbers easy to read. Figures below are the most recent published by the school.
YISS publishes a named-acceptances list each year rather than a full cohort matriculation breakdown. The list is predominantly U.S. research universities and Ivy-tier institutions, reflecting the school's American-curriculum focus and US-oriented counselling approach. Named destinations below are drawn from the school's 2025 acceptances materials.
YISS uses rolling admissions across all grades. There are no published fixed application deadlines; families apply as space allows and a wait-pool holds applicants for full grade levels. Under Korean law, eligibility for international schools is restricted. A Taiwanese passport holder is treated as a foreign national and qualifies without further conditions, provided the family is residing in Korea on the parent's visa.
YISS fits some Taiwanese families very well, and others less so. This is our honest reading of the match.
Seoul is around three hours from Taipei. For families considering YISS, the shortened flight makes back-and-forth manageable during a transition year. Harland's role is not to tutor your child at YISS. It is to help before and after the move: through the decision, through the preparation, and through the transition. Families who leave Taipei almost always keep studying with us remotely.
Families considering YISS often begin studying with us in Taipei to prepare for the American-curriculum register and the AP pathway. Students who move to Seoul usually continue with us remotely through SAT preparation, AP subject support, and US university applications. A few of the programs families reach for most often.
A consultation with our Student Coordinator is the fastest way to think the decision through with someone who is not trying to sell you the school. We can talk about what moving to Seoul looks like in practice, whether YISS's American-curriculum AP pathway suits your child, or how Harland can continue with them once they are there.