Mainland foreign schools, Seoul’s included, are set up for the children of foreign nationals. Korean law also admits Korean nationals who have lived abroad for a total of three years or more, and children of naturalised citizens whom the local school’s principal, after school-council review, judges unable to continue there (for example, because of limited Korean). Korean nationals admitted on overseas residence may fill no more than 30% of a school’s enrolment capacity, and dual nationals count as Korean. ↗ ↗
At primary level, Seoul Foreign School shows how this works. A child qualifies if at least one parent holds a non-Korean passport; if both parents are Korean, the child needs 1,095 days outside Korea since birth or six semesters of schooling abroad, within the government cap. Families send passports, a notarised English birth certificate (or Certificate of Family Relations), a Residence Card or a Certificate of Entry and Exit, and report cards. Ages 2–5 attend a Learner Readiness Session; ages 6–10 (Grades 1–5) add a teacher recommendation and sit the SFS Admissions Test, which may include an English evaluation. Applications for 2027–28 open in early November 2026, and the application fee is KRW 450,000. ↗ ↗
Jeju Global Education City has different admissions arrangements and includes NLCS Jeju, BHA, SJA Jeju and KIS Jeju. The schools offer different curricula and day or boarding options. Families considering Jeju need a plan for residence or boarding, support and the full journey home. The Jeju guide and reviewed school profiles provide dated details. Jeju guide
Chadwick International opened in 2010 in Songdo, Incheon. Its free-economic-zone setting involves different admissions arrangements from mainland foreign schools, with its own eligibility categories and capacity limits.