Seoul International School is a USA school in Seongnam, South Korea. Founded in 1973. It serves 999 students for students aged 4–19. Annual tuition ranges from $23,354 to $28,744 USD.
Explore This School
Location & Getting There
NanaSays Scorecard
Key Details
Key facts
About
Seoul International School is a coeducational day school located in Seongnam, Gyeonggi-do, South Korea, serving students aged 4 to 19. The school follows an American curriculum and has a student population of approximately 999 pupils.
School data verified by NanaSays. Last updated: April 2026.
Why Families Choose
- Sport
- Performing Arts
- STEM
Fees & Financials
| Grade / Year | Annual Fee |
|---|---|
| JK | KRW 23,370~$ 17 |
| SK | KRW 23,370~$ 17 |
| PK3 | KRW 19,517~$ 14 |
| Grades 1-5 | KRW 23,645~$ 18 |
| Grades 6-8 | KRW 25,681~$ 19 |
| Grades 9-12 | KRW 28,763~$ 21 |
Conversions to USD use exchange rates as of April 2026.
Original currency: ₩31,991,809 - 39,374,690. Application fee: $365.
Admissions Process
- 1Visit the school or schedule a personal tour by contacting the Admissions Office. The main admissions season runs January through March; the 2026–27 application opened January 9, 2026. Admissions inquiries are accepted Monday–Friday, 7:30 am–4:30 pm. If unable to visit, applicants may proceed directly to the application.
Admissions Details
School Day
High School runs an A-B rotation: Period 1 8:00–9:20, Office Hours 9:20–9:50, Period 2 9:50–11:10, Break 11:10–11:20, Period 3 11:20–12:40, Lunch/Activity 12:40–1:40, Period 4 1:40–3:00, Sports/Activities 3:00–5:00. Middle School uses an A-B schedule: Period 1 8:00–9:20, Advisory 9:25–9:50, Period 2 9:55–11:10, Lunch/Recess 11:15–12:10, Period 3 12:20–1:35/1:40, Period 4 1:40–3:00, Activities 3:00–5:00. Elementary operates on a rotating A-F schedule with staggered recess and lunch blocks by grade group.
Student Life
The cafeteria serves a hot meal to elementary students daily. Western and Korean menus are available to middle and high school students. Students may bring a packed lunch from home.
Facilities & Programmes
Student Demographics
Curriculum by Stage
| Stage | Curriculum | Notes |
|---|---|---|
| High School | Advanced Placement | Advanced Placement offered at high school level |
| Middle School | American Diploma | — |
| Elementary School | American Diploma | — |
School Background
private