TEACH YOU A LESSON

Title: 참교육 / Chamgyoyuk

Also known as: True  Education

Genre: Drama, school, action

Format: Webdrama

Episodes: 10

Broadcast network: Netflix

Broadcast period: 2026-Jun-05

Air time: Friday

Synopsis

In response to a rise in campus violence and the decline of faculty authority, the South Korean government establishes the Educational Rights Protection Bureau (ERPB) under the Teacher Rights Protection Act. The agency is granted the legal authority to use physical force and psychological pressure to discipline students and reform the school system. ERPB inspector Na Hwa-jin is dispatched to various educational institutions to dismantle hierarchies established by delinquent students and address administrative corruption. Accompanied by investigator Im Han-rim, Hwa-jin utilizes his state-sanctioned immunity to neutralize school gangs and restore order.

Cast

Main Cast

Kim Moo Yul as Na Hwa Jin (former Special Forces captain, inspector for the Educational Rights Protection Bureau (ERPB))

Jin Ki Joo as Im Han Rim (former Special Forces sergeant, inspector for the ERPB)

Pyo Ji Hoon as Bong Keun Dae (officer of the ERPB, KAIST graduate)

Lee Sung Min as Choi Kang Suk (Minister of Education, founder of the ERPB)

Daehan High School

Lee Seung Kyu as Ryu Joon Hyung (ep 1)

Kim Do Kun as Kim Kwang Soo (ep 1)

Lee Chan Yong as Kim Kyung Min (ep 1)

Jung Soo Hyun as Park Dae Suk (ep 1)

Guun High-Tech High School

Jun Bong Suk as Kim Hyung Joo (ep 2, 4)

Lee Tae Hwan as Jang Kwon Hyuk (ep 2)

Yoo Tae Joo as Park Sung Hwan (ep 2, 4)

Ok Jin Wook as Jo In Bum (ep 2, 4)

Soan Girls' High School

Lee Sang Hee as Jung Sun Young (ep 3)

Kwon Hyuk as Ko Young Soo (ep 3)

Park Seo Yoon as Han Yeo Ri (ep 3-4)

Kim Se Yun (김세연) as Jung So Young (ep 3)

Chukmyeong Foreign Language High School

Bae Joon Hyung (배준형) as Park Hyun Woong (ep 4)

Choi Duk Moon as Chan Sang Yul (ep 4)

Shim Soo Bin as Jung Soo Jung (ep 4)

Hyeongchung Elementary School

Song Shi Ahn (송시안) as Choi Ji Sun (ep 5)

Park Ji Yun as Lee Ji Young (ep 5)

Choi Ja Woon (최자운) as Kim Woo Jin (ep 5)

Kwon Dong Ho as Kim Suk Hyun (ep 5)

Hyeonjin Middle School

Jang Yo Hoon (장요훈) as Min Ji Woong (ep 6-7)

Im Hyun Mook (임현묵) as Yun Min Soo (ep 6-7)

Yoon Tae Shik (윤태식) as Lee Doo Hyun (ep 6-7)

Choi Hyun Joon (최현준) as Choi Woo Sung (ep 6-7)

Nakwon High School

Bae Jae Young as Lee Jae Yun (ep 7)

Jo Eun Sol (조은솔) as Shin Ji Soo (ep 7)

Jo Joon Ho (조준호) as Ji Sung Bin (ep 7)

Others

Kim Jong Soo as Hwang Ki Tae (presidential contender who opposes the ERPB)

Special guest appearances

Ha Young as Choi Ka Yoon (Kang Suk's daughter and Hwa Jin's fiancée)

Production Credits

Production Companies: Ylab Plex (와이랩 플렉스), GTist (지티스트)

Director: Hong Jong Chan

Original writing: Chae Yong Taek (채용택)

Screenwriter: Lee Nam Gyu

Posters