Extracurricular: Cast
Kim Dong-hee
Oh Ji-soo
Park Ju-hyun
Bae Gyu-ri
Jung Da-bin
Seo Min-hee
Nam Yoon-su
Kwak Ki-tae
Kim Yeo-jin
Lee Hae-gyoung
Choi Min-soo
Lee Wang-cheol
Park Hyuk-kwon
Cho Jin-woo
Seo Ye-hwa
Na Seong-mi
Kim Kwang-kyu
Byung-kwan
Baek Joo-hee
Cho Mi-jun
Im Gi-hong
Ryu Dae-yeol
Lee Hyun-gul
Kkakdugi
Park Ho-san
Oh Jung-jin
Shim Yi Young
Gyu-ri's Mother
Kim Young-pil
Gyu-ri's Father
Woo Da-vi
Soo-ji
Lee Jae-Baek
Kang Bbang
Lee Seung-wook
Chae-bin
Kim Yi-kyeong
Kim Ji-ye
Park Bo-Mi
Cho Min-joo
Kwon Han-sol
Hye-min
Kang Seol
Lee Na-eun
Shin Myung-sung
Lim Tae-woo
Lauren Han
Minhee (voice: English version)
Min Bok-gi
[Dean of students]
Lee Seung-woo
Kyung-sik