- Country: South Korea
- Genres: Drama, Mystery, Romance
- Release: 2015-04-27
- Director: N/A
- Writers: N/A
- Language: Korean
- Stars: Nam Joo-hyuk , Min-Kyu Kim , Kim So-hyun , Kim So-hyun , Mi-seon Jeon , Yook Sung-jae , Lee Hwa-Kyum , Doo-Sik Park , Ye-June Kim , Hee-jung Kim , Pil-mo Lee
- Runtime: min
- Awards: 6 wins & 5 nominations
- AKA: 恋するジェネレーション (Japan) , Huayu: Hakgyo 2015 , Huayu: Hakgyo 2015 (Mexico) , Who Are You: School 2015 (United States of America) , Школа 2015: Кто ты? (Russian Federation) , Who Are You: School 2015 (Germany) , Who Are You , Who Are You: School 2015 , Who Are You: School 2015 (Indonesia) , Huayu: Hakgyo 2015 (United Kingdom) , School 2015 , Huayu: Hakgyo 2015 (India) , Hooayoo: Hakgyo 2015 (Korea) , Who Are You: School 2015 (India) , Huayu: Hakgyo 2015 (United Arab Emirates) , Huayu: Hakgyo 2015 (Korea)
- Plot: A School girl called Go Eun-Byul goes off on a schooltrip to Teongyeong. While in Teongyeong she meets her twin sister Lee Eun-Bi for the first time. Lee Eun-Bi is having a hard time in life and is considering suicide. Lee Eun-Bi replaces Go Eun-Byul's live after her dissapear and have to live like her and lie to everyone.
- IMDB:tt5087824
Who Are You: School 2015 Cast · · · ALL
Kim So-hyun
Lee Eun-bi / Go Eun-byul
Nam Joo-hyuk
Han Yi-ahn
Yook Sung-jae
Gong Tae-kwang
Lee Cho-hee
Lee Shi-jin
No-min Jeon
Gong Jae-ho
Da-wit Lee
Park Min-joon
Hee-jung Kim
Cha Song-joo
Pil-mo Lee
Kim Joon-seok
Jeong-geun Sin
Dean of Students
Hee-kyung Yang
Park Min-kyung
Mi-seon Jeon
Song Mi-kyung
In-gi Jeong
Park Joon-hyung
Min Suk Kim
Min-suk
Jeong-nan Kim
Shin Jung-min
Lee Hwa-Kyum
Jo Hae-na
Kim Bo-ra
Seo Young-eun
Si-won Lee
Jung Min-Young
Cho Soo-hyang
Kang So-young
Hwan-hee Park
Kyung-Jin
Ye-June Kim
Young Gong Tae-kwang
Han Seong-Yeon
Sung Yeon