If you love intense school-themed K-dramas with justice, action, bullying issues, and morally charged storylines, Teach You A Lesson is one latest K-drama title worth adding to your watchlist. The 10 episodes Netflix series follows a fictional government task force, Educational Right Protection Bureau (ERPB) tackling South Korea’s troubled school system, from severe bullying to unruly students and toxic parents.
Adapted from the Naver webtoon Chamgyoyuk / 참교육, also known as Get Schooled or True Education, the intense storyline is also driving interest in the Teach You A Lesson manhwa and the Netflix adaptation. Below, we break down the Teach You A Lesson cast, their roles, and the popular dramas or movies you may have seen them in before.
Teach You A Lesson Cast and Where You’ve Seen Them Before
Kim Moo-yul as Na Hwa-jin
Kim Moo-yul leads the series as Na Hwa-jin, a fierce Educational Rights Protection Bureau (ERPB) inspector who storms into troubled schools to confront bullying, abuse of power, and classroom chaos—delivering tough justice with his signature punch.
For fans searching Kim Moo-yul movies and tv shows, here are some of his standout works:
- Sweet Home Season 2 — he plays Kim Young-hoo, a strong army leader of former Special Forces.
- Queen Woo — as Eul Pa-so, the brilliant, calculating, Prime Minister of Goguryeo.
- The Roundup: Punishment — stars as Baek Chang-gi, a brutal, ruthless mercenary main antagonist.
- Forgotten – Plays Yoo-seok, a complex character at the center of a dark, psychological mystery.
Read more here: More Kim Mu Yeol Drama to Watch After “Teach You a Lesson”
Entertainment reports shared that the role of Na Hwa-jin in Teach You A Lesson was first offered to Kim Nam-gil, who later declined the project. Kim Moo-yul eventually took on the role, and he successfully delivered a strong performance with the right mix of intensity, discipline, and emotional control.
Jin Ki-joo as Im Han-rim
Jin Ki-joo plays Im Han-rim, a former special forces officer turned agent in the Educational Rights Protection Bureau. Her character brings a fierce, unpredictable edge to the team, standing out with her commanding voice, fiery temperament, and action-ready presence.
If you are looking for Jin Ki-joo movies and drama, these are some of her most popular titles:
- Come and Hug Me — Starred as Han Jae-yi, an aspiring actress suffering from the trauma of her past.
- Undercover High School— as Oh Soo-a, a contract Korean history teacher with an upright personality.
- Midnight – as Kyung-mia sign language counselor with hearing problem.
- My Perfect Stranger — Baek Yoon-Young, a writer with a struggling life.
- Little Forest — Played Eun-sook, the witty and playful best friend of the protagonist.
Lee Sung-min as Choi Gang-seok
Veteran actor Lee Sung-min stars as Choi Gang-seok, the Minister of Education and founder of the ERPB. He brings authority and conviction to the role as a leader determined to take decisive action against bullying and restore order in schools.
His famous dramas include:
- Reborn Rich — Jin Yang-chul, the powerful chairman of the Sunyang Group.
- Misaeng: Incomplete Life — Oh Sang-shik, a dedicated and highly principled sales team manager.
- The Spy Gone North — Ri Myung-woon, a complex and calculating high-ranking North Korean intelligence officer.
- No Other Choice —stars as Koo Beom-mo, a highly dedicated paper industry veteran
Pyo Ji-hoon / P.O as Bong Geun-dae
P.O (Pyo Ji-hoon) plays Bong Geun-dae, a brilliant assistant director at the Educational Rights Protection Bureau. With his soft, youthful image and calm presence, he contrasts the drama’s intense conflicts. A tech-savvy genius, Geun-dae also graduated from KAIST in just two years.
Some of his well-known dramas include:
- Heart Man: Rock and Love — Seung-ho
- Good Partner — Jeon Eun-ho
- Hotel Del Luna — Ji Hyun-joong
- Mouse —Detective Shin Sang
Ha-Young as Choi Ga-yun
Ha-Young plays Choi Ga-yun, Choi Gang-seok’s daughter and Na Hwa-jin’s former fiancée. Her tragic death at the hands of her student becomes the turning point that leads Minister Choi Gang-seok to establish the ERPB to protect the educational rights of teachers, students, and parents.
Notable dramas with Ha-Young include:
- The Trauma Code: Heroes on Call — Plays Cheon Jang-mi, a highly competent, senior hospital nurse in a high-pressure trauma center.
- Doona! — Kim Jin-joo, the high school soulmate and loyal friend of the male lead.
- Boyfriend on Demand — Lee Ji-yeon, the close friend and colleague of webtoon producer Seo Mi-rae
Is There a Season 2 for Teach You A Lesson?
Netflix has not officially confirmed Teach You A Lesson Season 2 yet. Since the drama only premiered on June 5, 2026, a renewal announcement may still be early. However, director Hong Jong-chan has hinted at the possibility, saying there are still many stories left to tell within the school setting.
For now, fans should treat Teach You A Lesson Season 2 as unconfirmed until Netflix releases an official update.
Still haven’t joined the hype? Watch the Teach You A Lesson trailer below to see what this K-drama is all about:
