Playback serverIf a title won’t play, switch servers.
Undercover High School
Season 1 · Episode 9
The Mathematics Teacher
9.01h 8mMarch 21, 2025
As Su A recovers in the hospital following the attack during the break-in, Hae Seong and the team uncover the culprit: Lee Jun Ho, the mathematics teacher. When Hae Seong detects his father's notebook missing, he realizes that Seo Myeong Ju 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 Seong stumbles upon a crucial clue to the final scary story.
Episodes
- Episode 1The Emperor's Lost Gold
- Episode 2Spooky Stories
- Episode 3Ghost Story Riddles
- Episode 4Joining the Student Council
- Episode 5Student Council
- Episode 6Hye Seong's Father's Notebook
- Episode 7The 24th Anniversary of Byeongmun High School
- Episode 8The Plan for VIP Students
- Episode 9The Mathematics Teacher
- Episode 10Retribution
- Episode 11The Devastating Truth
- Episode 12Where The Stars Lead