
A Korean drama with just two episodes remaining has recorded its lowest viewership rating yet—only 5.4%. Attention is now on whether the series can rebound and end on a high note, after previously hitting a peak of 8.3%.

The drama in question is “Undercover High School”, an MBC Friday-Saturday series. According to Nielsen Korea on March 23, episode 10, which aired the previous day, recorded a nationwide viewership of 5.4% and 5.3% in the metropolitan area.
Although episode 4 reached a peak of over 8% (with a max of 11%), ratings have since hovered around 5-6%. With the finale approaching, episode 10’s numbers marked an all-time low—an unfortunate turn.
[“Undercover High School” Viewership Trend – Based on Nationwide Data from Nielsen Korea]
- Episode 1: 5.6%
- Episode 2: 6.6%
- Episode 3: 6.6%
- Episode 4: 8.3%
- Episode 5: 7.2%
- Episode 6: 6.7%
- Episode 7: 6.8%
- Episode 8: 6.1%
- Episode 9: 6.1%
- Episode 10: 5.4%
In the latest episode, Jung Hae-sung (played by Seo Kang-joon) and Seo Myung-joo (Kim Shin-rok) tracked down the hidden gold treasure. Myung-joo returned to the school and revealed she had prior knowledge of the fourth legend associated with the school, shocking viewers.
Episodes 11 and the finale of MBC’s Friday-Saturday drama “Undercover High School” are scheduled to air at 9:50 PM on March 28 and 29. Whether the series can overcome its ratings slump and achieve a strong finish remains to be seen.