Idol School

Episode 1 (1x1)

Air date: Jul 13, 2017

After the introduction of the show from the acting principal, the girls enter the classroom one by one. They begin their lessons with a vocal evaluation, singing "Into the New World". They then started dance lessons, where students must learn re-choreographed version of songs, with both songs' chorus looped on a cycle. At this episode, student Som Hye-in made the decision to leave the show due to poor health.