Teach You a Lesson

WARNING: Due to violence and mature content, this drama may not be suitable for some younger viewers.

Teach You a Lesson

Details

• 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
• Original soundtrack: Teach You a Lesson OST

Synopsis

When respect collapses in schools, unconventional inspectors arrive to set things right — with sharp, non-nonsense lessons you won't find in textbooks. --- Netflix

User/Viewer Ratings

3.40

(5 votes)

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)
• Song Young Kyu as Ryu Kwang Pil (ep 1, Ryu Joon Hyung's father)

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 Ye Ri (ep 3-4)
• Kim Se Yun as Jung So Young (ep 3)
• Yang Ah Reum (양아름) as Park Soo Jin (ep 3)
• Kim So Wan (김소완) as Lee Da Jin (ep 3)

Chukmyeong Foreign Language High School

• Bae Joon Hyung as Park Hyun Woong (ep 4)
• Choi Duk Moon as Chan Sang Yul (ep 4)
• Shim Soo Bin as Jung Soo Jung (ep 4)
• Kim Sun Hwa as Kim Young Ran (ep 4)
• Lee Dong Ho (이동호) as Noavis instructor (ep 4)

Hyeongchung Elementary School

• Song Shi Ahn as Choi Ji Sun (ep 5)
• Park Ji Yun as Lee Ji Young (ep 5)
• Choi Ja Woon as Kim Woo Jin (ep 5)
• Kwon Dong Ho as Kim Suk Hyun (ep 5)

Hyeonjin Middle School

• Jang Yo Hoon 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)
• Kim Chae Eun (김채은) as Oh Yoon Jin (ep 6)

Nakwon High School

• Bae Jae Young as Lee Jae Yoon (ep 7)
• Jo Eun Sol (조은솔) as Shin Ji Soo (ep 7)
• Jo Joon Ho as Ji Sung Bin (ep 7)
• Jo Hyun Woo (조현우) as Jae Yoon's father (ep 7)

Seungyeon High School

• Kim Tae Young as Jung Hyun Min (ep 8)
• Seo Young Hee as Jung Hyun Min's mom (ep 8)
• Lee Suk Joon as Jung Hyun Min's dad (ep 8)
• Jang Eun Ah as Cho Da Hee's mom (ep 8)
• Jo Yun Jin as Young Joon's mom (ep 8)

Jinwon High School

• Lee Woo Je as Jang Sung Koo (ep 9-10)
• Kim Jae Sun as Lee Chi Ho (ep 9-10)
• Shin Dong Joon (신동준) as Lee Jong Soo (ep 9)
• Lee Seung Noh as Jung Hyun Tae (ep 9)
• Kim Da Hwin as Lawyer Yoon (ep 9)

Others

• Kim Jong Soo as Hwang Ki Tae (presidential contender who opposes the ERPB)
• Kim Byung Choon as Lee Chul Myun (a veteran opposition lawmaker from the Daehan Mirae Party)
• Lee Bong Joon as Jo Kyu Chul
• Kim Kyoon Ha (김균하) as Kim Soo Kyum
• Choi Jae Sup as Prison Officer Kang
• Jun Seung Hoon (전승훈) as Seo Tae Hoon

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

Notes

• Based on the 2020 webcomic True Education (참교육), written by Chae Yong Taek (채용택) and illustrated by Han Ka Ram (한가람).
• Filming began the first half of 2025.

External Links

• Netflix
• HanCinema
• English Wikipedia
• Korean Wikipedia