A TEFL course of 100-hours or more is required to teach at a public school, with some programs such as GOE and Busan EPIK requiring a TEFL certification with an in-class component as well. Private Institutes and Hagwons do currently not require a TEFL certificate.
Sources
- EPIK 공식 사이트 — EPIK / English Program in Korea (국립국제교육원)