Where To Stream Undercover High School Season 1 Episode 9
The Mathematics Teacher
- Aired March 21, 2025
- 70 Min
- Rated 9.3
- Number 10 Of 12 Rated Episodes
As Soo-ah recovers in the hospital following the attack during the break-in, Hae-sung and the team uncover the culprit: Lee Jun-ho, the mathematics teacher. When Hae-sung detects his father's notebook missing, he realizes that Seo Myung-joo orchestrated the break-in. After Lee Jun-ho's arrest and confession, the revelation of the school's grade-rigging scandal throws the institution into chaos. Amid the turmoil, Hae-sung stumbles upon a crucial clue to the final scary story.