Teach You a Lesson
Teach You a Lesson

Teach You a Lesson

2026 • 1 Season • 9.4 Ended

An inspector from the Educational Rights Protection Bureau (ERPB) who is authorized by the government to use physical intervention and unconventional methods to discipline delinquent students and reform the educational system.

Trailers & Videos 2

Official Trailer [ENG SUB]

Official Teaser [ENG SUB]

Episodes

Inspector Na Hwa-jin steps into the chaos and takes control of a school plagued by the spoiled son of a powerful politician — to teach him a lesson.

With unassuming Bong Geun-dae on his side, Hwa-jin uses his special ops skills to handle a school gang and defend a student who just wants to study.

When a teen influencer spreads false claims about her teachers, the team's loose-cannon Inspector Im Han-rim steps in to set the record straight.

Choi Gang-seok weathers a political attack on his bureau. Hwa-jin's team visits an elite school to uncover why a student attacked a respected teacher.

When an elementary school teacher's spirit wears down under pressure, Hwa-jin steps in to be her substitute — turning the tables to solve the case.

Four juvenile delinquents think they're above the law — until the team takes an interest in their extracurricular crimes and gives a harsh reality che...

Geun-dae goes undercover to help a father find his gambling addict son. To undermine the bureau politically, Hwang Gi-tae visits a juvenile inmate.

After a pre-med student collapses in class, Hwa-jin investigates his obsessive mother, whose access to illicit pills hints at a larger conspiracy.

To help a student escape his exploitative friends, Han-rim adopts a new persona to join his circle. Cho Gyu-cheol's return puts the bureau in danger.

After public backlash hits the bureau, Hwa-jin and his team go rogue to expose a deadly conspiracy led by a violent student-run gang.

Cast

Ratings & Reviews

TMDB

9.4/10

931 votes

Community

No ratings yet

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IMDb

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TMDB Reviews

TMDB

3 months ago

9/10

I am completely hooked on Teach You a Lesson. It is rare to find a show that balances a satisfying, high-octane "power fantasy" premise with actual substance.

Every episode feels like a fresh, high-stakes investigation that teaches a new lesson. It’s not just about the action—though Kim Mu-yeol’s performance is brilliant—it’s about the underlying message of finding justice in a broken system. Watching corrupt individuals finally face the consequences of their actions is incredibly cathartic.

The writing is sharp, the pacing is fast, and the emotional stakes keep you invested until the very end. If you’re looking for a K-drama that is as thrill-inducing as it is meaningful, this is well worth your time. Highly recommended!

TMDB

3 months ago

The series drops viewers into an alternate South Korea where the classroom has completely devolved. Hamstrung by youth-protection laws and terrified of wealthy, hyper-influential parents, teachers have lost all authority. In this vacuum, vicious student gangs and cyberbullies rule with absolute immunity

TMDB

3 months ago

this is absulate peak. best kdrama of the year or i'd say best drama of this year. highly recommended watch this masterpiece! 💥

ℛ.

ℛ.

TMDB

2 months ago

8/10

There's so much I want to say about this drama. But let's keep it short.

This drama, which explores bullying in schools, left me with mixed feelings. It is both terrifying and sad to realize that perhaps in some places cases of bullying are becoming more and more common. Although in my own place the bullying cases are not that bad (or so I thought). Like the tip of the iceberg, this bullying seems to be a hidden threat for a long time.

But one thing I've realized is that recent bullying cases are truly horrific. It's as if the psychological impact on the victims isn't a problem.

The perpetrators can still live, but the victims? Life feels reluctant.

It's a bittersweet, but bullying between students, teacher-on-student violence, student-on-teacher resentment, and even parental accusations against teachers do exist, and will continue to happen if we can't control ourselves.

And this drama seems to reveal everything (even though it is packaged in a fictional story).

Aside from the bullying things, I personally really enjoyed this drama, especially the interactions between Na Hwajin and Minister Choi. The dry, dad-like comedy was also quite entertaining, making me laugh out loud several times.

When it comes to the acting, I think they all deserve a thumbs up. This drama is a chef's kiss, I guess.

Dean

Dean

TMDB

3 weeks ago

10/10

I love TV shows like this and no one does it better than Koreans. Great show. It has heart inside, has good soundtracks and good morale story. Definitely 10/10!

𝑪𝒓𝒆𝒍𝒊𝒔𝒚𝒂

𝑪𝒓𝒆𝒍𝒊𝒔𝒚𝒂

TMDB

1 week ago

5/10

It's way too theatrical

*I had pretty high expectations for this drama, mainly because of the cast, the director, and especially the concept. The idea of the (ERPB), protecting the right to education, and tackling school bullying is something I’m really interested in, so I was genuinely curious to see how this organization would be used in the story.*

In the end, even though it’s overall decent and the variety of cases is interesting, I still came away a bit disappointed. I felt like the writing was way too simplistic, and I kept having the impression that the drama was missing the opportunity to explore something much deeper and more nuanced. Some cases work better than others, but overall I was expecting something a lot more ambitious.

That being said, I really liked the case in episode 5. It’s probably one of the strongest episodes so far. It deals in a pretty realistic way with academic burnout and the pressure/excesses of parents who completely cross the line in the name of their child’s success. I found it especially impactful because it felt grounded, and I could genuinely feel the stress and suffocation experienced by the teacher. That’s really when the show works best when it focuses on everyday, realistic issues instead of overly dramatized situations.

On the other hand, I kept feeling like the narrative often assumes the student is guilty right from the start of each investigation, while the teachers are framed as innocent victims. The story almost always sides with the teachers, even though abuse of power can exist on that side as well. That’s actually why I appreciated episode 4, where that nuance is finally acknowledged (otherwise I honestly would’ve dropped the show).

Another issue for me is how theatrical the portrayal of students and the school environment is. I was also a bit confused by the sets and especially how the classrooms are depicted.

*I get that there are rebellious or disrespectful students in real l...

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