Cast Of Teach You A Lesson is undoubtedly one of the trending searches among the K-drama lovers due to its unique storyline, fantastic performance, and socially important theme. It’s an action school drama of South Korea having actors such as Kim Mu-yeol, Lee Sung-min, Jin Ki-joo, Pyo Ji-hoon (P.O), Ha Young, and more playing significant roles. Directed by Hong Jong-chan, this show features a daring story about teachers’ authority protection, school bullying struggle and justice establishment in education facilities.
This series is based on the popular Naver webtoon Get Schooled (True Education) by Chae Yong-taek & Han Ga-ram. Teach You A Lesson is a drama which focuses on an increasingly violent and disrespectful environment in schools which resulted in the formation of the governmental organization called “Educational Rights Protection Bureau (ERPB)”. This team is supposed to intervene at schools where conventional approaches fail, and it uses very unusual methods in order to establish discipline and justice there.
Kim Mu-yeol is the leading actor of this drama who plays a role of Na Hwa-jin, elite inspector with special operations background. On the other hand, Lee Sung-min plays Choi Gang-seok, a man who established the educational protection bureau. Jin Ki-joo is playing a character of Im Han-rim and Pyo Ji-hoon plays a character of Bong Geun-dae. They both belong to the team which works on the most challenging school cases.
This article gives you all the information about the cast of Teach You A Lesson, which includes the actors, the characters, and many other important things.
Series Overview
| Category | Details |
|---|---|
| Series Name | Teach You A Lesson |
| Original Korean Title | Chamgyoyuk (참교육) |
| Genre | Action / School Drama / Thriller |
| Language | Korean |
| Country | South Korea |
| Director | Hong Jong-chan |
| Writers | Lee Nam-kyu, Kim Da-hee, Moon Jong-ho |
| Based On | Naver Webtoon Get Schooled |
| Production Companies | Ylab Plex, GTist |
| OTT Platform | Netflix |
| Release Date | 5 June 2026 |
| Episodes | 10 Episodes |
What Is Teach You A Lesson?
Teach You A Lesson is a South Korean action drama which revolves around problems associated with contemporary education system, specifically bullying, violence, and lack of authority of teachers.
The plot starts off with some schools experiencing major problems wherein students, parents, and institutions themselves challenge the authority of teachers. In order to address these problems, the government establishes the Educational Rights Protection Bureau (ERPB) which is intended to protect educational rights and maintain discipline.
This drama revolves around the character of Na Hwa-jin, an inspector of ERPB, who visits schools having problems and takes actions against students and people who misbehave using their authority. Contrary to regular teachers and school administrators, Hwa-jin possesses particular skills and takes drastic measures in dealing with people responsible for disrupting schools.
Themes of the drama include:
- school bullying
- teacher authority
- student violence
- justice system
- educational reform
- power dynamics
- moral responsibility
Instead of portraying simple classroom stories, the drama includes actions and investigations.
Full Cast Of Teach You A Lesson
| Actor Name | Character Name | Photo |
|---|---|---|
| Kim Mu-yeol | Na Hwa-jin |  |
| Lee Sung-min | Choi Gang-seok |  |
| Jin Ki-joo | Im Han-rim |  |
| Pyo Ji-hoon (P.O) | Bong Geun-dae |  |
| Ha Young | Choi Ga-yoon |  |
| Lee Bong-joon | Cho Gyu-cheol |  |
| Supporting Cast | Various School Characters |
Main Cast Of Teach You A Lesson
Kim Mu-yeol As Na Hwa-jin
Kim Mu-yeol portrays Na Hwa-jin, who is the main character in the film Teach You A Lesson.
Na Hwa-jin is an inspector who works for the Educational Rights Protection Bureau (ERPB). Before joining the organisation, he had an experience in the area of the army which is very specific.
Unlike regular educators, Hwa-jin deals with problems using discipline and investigation.
He visits schools where violence, bullying, and wrong practices have gone out of control.
The character of Hwa-jin is a representation of the strict approach to justice. Although his methods can seem extreme, his main mission is protecting students that suffer from powerful people and wrong systems.
The actor Kim Mu-yeol is good at intense roles. The experience of action and thriller projects helps him play a character who possesses intelligence, skills, and control.
Hwa-jin is the main character of the series and, therefore, Kim Mu-yeol’s performance is the most interesting part of the series.
Lee Sung-min As Choi Gang-seok
Lee Sung-min is the actor that portrays Choi Gang-seok, the founder of the Educational Rights Protection Bureau.
Choi Gang-seok is responsible for the creation of the organisation because of the educational problems he found.
Unlike Hwa-jin who deals with all the problems personally, Gang-seok is the character who sees the entire picture of the crisis and tries to find the solution to it.
Lee Sung-min is famous for his strong character performances. Therefore, he brings maturity and power to the series.
It is the character that helps understand the reason for the existence of the ERPB and how it works.
Jin Ki-joo As Im Han-rim
Jin Ki-joo plays the role of Im Han-rim, an inspector who works in the Educational Rights Protection Bureau.
Im Han-rim is a former special forces officer.
Her character brings the additional strength to the investigation group. She works alongside with Na Hwa-jin while dealing with the difficult problems related to students, schools, and society.
The role of Jin Ki-joo helps to create the balance between action scenes and emotional storyline.
This character also helps to demonstrate the point of view inside the ERPB and the fact that the resolution of the educational problems is a team effort.
Pyo Ji-hoon (P.O) As Bong Geun-dae
Pyo Ji-hoon, commonly known as P.O, plays the role of Bong Geun-dae.
Bong Geun-dae is an assistant director in the ERPB who is described as an intelligent man who graduated from KAIST.
Unlike the physically strong characters of the team, his contribution is based on the intellect and strategic thinking.
P.O is a great addition to the cast as he adds humor, intelligence, and emotionality to the storyline.
His character demonstrates that resolving school problems needs not only physical strength but also intellectual capabilities.
Ha Young As Choi Ga-yoon
Ha Young is the actress who plays the role of Choi Ga-yoon, the daughter of Choi Gang-seok.
Her character helps to create the personal aspect of the story.
While the main storyline is about the mission of the ERPB, such characters as Ga-yoon help to expand the personal relations and motivations of the main characters.
Supporting Cast Of Teach You A Lesson
Supporting cast helps to create the world of the series by portraying students, teachers, parents, officials, and others related to school conflicts.
| Actor | Character |
|---|---|
| Lee Bong-joon | Cho Gyu-cheol |
| Various Supporting Actors | Students, teachers and officials |
They symbolize various aspects of the education system and bring out the problems that the ERPB group faces.
Cast And Character Table Of Teach You A Lesson
| Actor | Character | Role Description |
|---|---|---|
| Kim Mu-yeol | Na Hwa-jin | ERPB inspector and main protagonist |
| Lee Sung-min | Choi Gang-seok | Founder of ERPB |
| Jin Ki-joo | Im Han-rim | Former special forces officer and inspector |
| Pyo Ji-hoon | Bong Geun-dae | Assistant director of ERPB |
| Ha Young | Choi Ga-yoon | Choi Gang-seok’s daughter |
| Lee Bong-joon | Cho Gyu-cheol | Supporting character |
Story And Plot Overview Of Teach You A Lesson
Teach You A Lesson is set in the universe of schools facing violence and loss of power among the teaching faculty.
Due to several incidents reflecting problems in the education system, the government creates the Educational Rights Protection Bureau.
Inspectors are sent to those schools which cannot be handled under regular procedures.
Na Hwa-jin is one of the major characters of the drama and is the agent dealing with those difficult situations. Na has to deal with violent students, manipulative parents, and organizations failing to safeguard teachers and students.
Teach You A Lesson questions whether punishment alone is enough to solve problems in education or any other changes are necessary.
Teach You A Lesson Director
Director of Teach You A Lesson is Hong Jong-chan.
His style of directing involves dealing with dramas centered on characterization and socially relevant themes. Some of his previous works involve human relationships, justice, and emotional issues.
Teach You A Lesson combines action and social commentary in Hong Jong-chan’s latest work where he is adapting a popular webtoon into live action drama.
Director’s approach towards making the drama is to create an atmosphere where there is a connection between the problems in schools and larger social issues.
Production Details Of Teach You A Lesson
Producers of the drama are:
- Ylab Plex
- GTist
Based On: Naver Webtoon Get Schooled written by Chae Yong-taek and Han Ga-ram.
| Production Detail | Information |
|---|---|
| Production Companies | Ylab Plex, GTist |
| Based On | Get Schooled Webtoon |
| Director | Hong Jong-chan |
| Writers | Lee Nam-kyu, Kim Da-hee, Moon Jong-ho |
Music And Technical Details
The technical team focuses on creating an intense action-drama atmosphere.
| Department | Details |
|---|---|
| Genre Style | Action School Drama |
| Based On | Webtoon Adaptation |
| Direction | Hong Jong-chan |
| Screenplay | Lee Nam-kyu, Kim Da-hee, Moon Jong-ho |
Release Date Of Teach You A Lesson
Teach You A Lesson was released on Netflix on 5 June 2026.
| Release Information | Details |
|---|---|
| Platform | Netflix |
| Release Date | 5 June 2026 |
| Country | South Korea |
| Episodes | 10 |
OTT Release Of Teach You A Lesson
The series is available exclusively on Netflix worldwide.
| OTT Detail | Information |
|---|---|
| OTT Platform | Netflix |
| Release Date | 5 June 2026 |
| Language | Korean |
| Format | Web Series |
Box Office Collection Of Teach You A Lesson
This is because Teach You A Lesson is an original series on Netflix rather than a movie that would be shown in theaters.
| Category | Details |
|---|---|
| Theatrical Collection | Not Applicable |
| OTT Release | Netflix |
| Format | Television Series |
Teach You A Lesson Hindi Dubbed Version & Audio Languages
The movie Teach You A Lesson is available on Netflix and is available in multiple audio languages, allowing people from various parts of the world to watch the show in their desired language. The original language of the series is Korean, but people from India can watch the movie with dubbed Hindi audio.
| Audio Language | Availability |
|---|---|
| Korean (Original Audio) | Available |
| Hindi Dubbed | Available |
| English | Available |
| Tamil Dubbed | Available |
| Telugu Dubbed | Available |
Language preference can be changed in Netflix using the Audio & Subtitles menu when viewing the show. The availability of dubbed languages depends on the region and settings of Netflix.
Audience Response And Reviews
This TV show gained much recognition due to the unique idea concerning school violence and educational reform.
The viewers valued:
- Kim Mu-yeol’s acting
- Good action scenes
- Message
- Original plot
- Investigative-like episodes
The mixture of action and school drama made this show different from other Korean classroom dramas.
Why Is Cast Of Teach You A Lesson Unique?
Cast Of Teach You A Lesson is unique thanks to a combination of experienced actors and characters of diverse nature.
Kim Mu-yeol brings to the show his dynamic style of acting while Lee Sung-min gives his character leadership and authority. Jin Ki-joo and P.O add to the ERPB team the new perspective and special skills.
Thus, the entire cast forms the team of various people representing different approaches to the educational issues resolution.
Conclusion
The Cast Of Teach You A Lesson is one of the greatest advantages of this Korean action school drama. The cast includes the great performances of Kim Mu-yeol playing Na Hwa-jin and Lee Sung-min, Jin Ki-joo, Pyo Ji-hoon, Ha Young, and other excellent actors.
What is specific for this drama is the combination of action scenes, social issues, and educational challenges which form the unique plot. Contrary to ordinary school drama shows, it touches on more serious themes of authority, justice, bullying, and responsibility.
This Korean drama has all necessary features being based on a webtoon and released via Netflix.
FAQs About Cast Of Teach You A Lesson
Kim Mu-yeol plays the lead role of Na Hwa-jin in Teach You A Lesson.
Lee Sung-min plays Choi Gang-seok, the founder of the Educational Rights Protection Bureau.
The series is available on Netflix worldwide.
The series is based on the Naver webtoon Get Schooled by Chae Yong-taek and Han Ga-ram.
The series has 10 episodes.
It is a South Korean action school drama with thriller elements.