Extracurricular (2020)

A brilliant but desperate high school student crosses into the criminal underworld in this dark, gripping Korean Netflix original.

Extracurricular - Series Information

  • Original Title: 인간수업
  • First Air Year: 2020
  • Last Air Year: 2020
  • Created by: Gin Han-sai, Kim Jin-min
  • Type: TV Series
  • Genres: Crime, Drama
  • Content Rating (US): TV-MA
  • Episode Runtime: Average runtime per episode (55 minutes)
  • Number of Seasons: 1
  • Number of Episodes: 10
  • Status: Canceled
  • Original Language: Korean
  • Spoken Languages: Korean
  • First Air Date: April 29, 2020 (United States - TV-MA), April 29, 2020 (Brazil - 18), April 29, 2020 (South Korea - 19)
  • Networks: Netflix
  • Alternative Titles: Human Class (US), ชมรมลับธุรกิจรัก (TH), Ingansueob (KR), 人性課外課 (TW)
  • Production Companies: Studio 329
  • Production Countries: South Korea

Extracurricular - Plot

Determined to escape a dead-end life, a gifted high school student turns to a world of serious crime to ensure he can pay for college.

Extracurricular - Trailer

See the tension unfold in the official trailer for Extracurricular:

Some mistakes cannot be erased.

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Extracurricular - Cast & Crew

Creator(s)

  • Gin Han-sai
  • Kim Jin-min

Main Cast

  • Kim Dong-hee
  • Park Ju-hyun
  • Jung Da-bin
  • Nam Yoon-su
  • Kim Yeo-jin
  • Choi Min-soo
  • Park Hyuk-kwon
  • Seo Ye-hwa
  • Kim Kwang-kyu
  • Baek Joo-hee

Writers

  • Gin Han-sai

Executive Producers

  • Yoon Shin-ae

Extracurricular - FAQs

What dark secret does Oh Ji-soo hide in Extracurricular?

Beneath his model-student exterior, Oh Ji-soo secretly runs an illegal escort operation to save money for college. He manages everything alone until a classmate discovers the truth, setting off a chain of dangerous consequences that spiral far beyond anything he anticipated.

Is Extracurricular worth watching for fans of Korean drama?

Absolutely. Extracurricular earned strong critical praise for its unflinching portrayal of youth crime and moral ambiguity. It holds an impressive score on Rotten Tomatoes and stands out among Korean Netflix originals for its dark tone, tight pacing, and morally complex characters that keep you hooked across all ten episodes.

Where can you stream Extracurricular online?

Extracurricular is available to stream on Netflix and Netflix Standard with Ads. Both options give you access to all ten episodes of the single season, making it easy to binge the entire series in just a few sittings.

Is Extracurricular based on a true story?

Extracurricular is an original fictional work, not based on a specific true story. However, writer Gin Han-sai drew on real societal pressures facing South Korean youth, including intense academic competition and financial inequality, to craft a story that feels disturbingly plausible and socially resonant.

Why was Extracurricular cancelled after one season?

Netflix cancelled Extracurricular after its first season without providing an official explanation. The show's status is listed as cancelled, meaning the story concludes with Season 1's ten episodes. Despite strong viewer interest, no second season was commissioned, leaving the ending open to interpretation.

Who are the lead actors in Extracurricular?

Kim Dong-hee leads the cast as the calculating Oh Ji-soo, with Park Ju-hyun playing the sharp and unpredictable Bae Gyu-ri. Jung Da-bin and Nam Yoon-su round out the core teen ensemble, while veterans Kim Yeo-jin and Choi Min-soo deliver compelling performances as adult figures entangled in the chaos.

How was Extracurricular received by critics internationally?

Critics praised Extracurricular for its bold narrative choices and refusal to moralize. International reviewers highlighted its cold, clinical atmosphere and the way it subverts typical coming-of-age conventions. It was widely recognized as one of the more daring Korean originals Netflix released during the early wave of Korean content expansion.

What shows are similar to Extracurricular?

If Extracurricular hooked you, try Weak Hero (2022) for more intense Korean school drama, or Revenge of Others (2022) for a similarly dark teen thriller. Beyond Korean content, Never Have I Ever (2020) offers a lighter take on high school pressures, while Pyramid Game (2024) delivers sharp social commentary in a school setting.

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