Positive Points

Every single actor involved in the production delivered superb performances over the course of the full series, which is exceptionally well written and paced. Kim Mu-yeol's performance is so intense and powerful, comparable to John Wick's, that it is surprising he hasn't yet starred in any major roles with Hollywood. Lee Sung-min's character is multi-faceted and brings emotional depth to his performance, while Jin Ki-joo's humorous performance steals all of the scenes he appears in. The series expertly balances between these two types of performances.

Negative Points

The series explores many significant social issues, including cyberbullying, parental pressures placed on children, and economic inequality; however, these serious issues are handled in a sensitive manner that presents these issues as necessary, real-life issues rather than merely opportunistic.

Overall: Teach You A Lesson is a smart, emotionally engaging drama that uses entertainment as a vehicle for meaningful social commentary. Despite minor missteps, it's a must-watch — and absolutely deserves more seasons.