Let this be a lesson: on Netflix, a hard-hitting high-school K-drama.

Let this be a lesson to you! is available on Netflix since June 5, 2026. This South Korean series blends action, school-life drama and comedy around an office dedicated to upholding teachers' authority in schools where conflicts have spiraled out of control.

Let that be a lesson to you!
Series | 2026
Available on Netflix since June 5, 2026
Action, comedy, drama
Created by Hong Jong-chan, Lee Nam-kyu and Kim Da-hee
Starring Kim Moo-yul, Lee Sung-min, Jin Ki-joo and Pyo Ji-hoon
International title: Teach You a Lesson
Nationality: South Korea
Netflix France classification: 16+

In Let That Be a Lesson to You!, respect has all but disappeared in some schools. To tackle violence, abuse, and tensions between students, teachers, and parents, inspectors armed with unconventional methods step in to restore order, sometimes going far beyond the usual practices.

The series follows the Office of the Protection of the Teaching Authority, a fictional agency whose job is to remind people where the boundaries lie. Netflix bills the show as a drama in which inspectors of a certain stripe dispense lessons that aren’t found in the school manuals.

In the cast, Kim Moo-yul leads as Na Hwa-jin, Lee Sung-min plays Choi Gang-seok, Jin Ki-joo portrays Im Han-rim, and Pyo Ji-hoon, also known as P.O, rounds out the team in the role of Bong Geun-dae. Netflix Tudum also confirms the involvement of director Hong Jong-chan, who reunites here with Kim Moo-yul and Lee Sung-min after Juvenile Justice.

The announced tone blends schoolyard showdowns, institutional satire, and high-energy action. Several previews of the series describe a world where bullying and school violence have escalated to such a degree that a special task force is brought in to intervene.

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Let this be a lesson to you! may appeal to Netflix subscribers who follow action-packed K-dramas, tense school-set stories, and South Korean thrillers that tackle bullying or power dynamics in schools. The series is less aimed at viewers seeking a realistic, understated drama about the day-to-day life of teaching.

The official trailer for Que ça vous serve de leçon ! introduces the team from the Office for the Protection of Teaching Authority and its no-nonsense approach to stepping in at crisis-hit schools.

To go further, also check out our selection of Netflix’s June 2026 new releases (films and series to watch this month), our guide to streaming releases across all platforms, and today’s pick: What to watch today on streaming.

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