Lee Minhyung

•principal of LMHSS(Lee Middle and High School Seoul)
•education LMHSS
•28 years old
•super kind and trustworthy
•occasionally teaches English and Literature
•single

Lee Donghyuck

•currently jobless
•education LMHSS
•25 years old
•super straightforward and touchy
•degree in Music
•used to dance a lot
•single

Lee Jeno

•teacher in LMHSS
•education LMHSS
•27 years old
•quiet and mysterious but super friendly
•degree in Geography,Chemistry and dance
•sometimes helps the qoir-plays the guitar
•married

Na Jaemin

•teacher in LMHSS
•education SOPA
•25 years old
•flirty and full of love but can be bitchy
•degree in Mathematics and Physics
•can play piano and dance
•married

Johnny Seo

•teacher in LMHSS
•education SOPA
•29 years old
•super friendly and funny,every student loves him
•degree in English and Literature
•used to dance,now just works out and travels a lot
•married

Chittaphon Leechiayapornkul

•teacher in LMHSS
•education in THSSA(Thai high school of dance and architecture)(that's made up)
•27 years old
•straightforward and really strict
•degree in architecture
•runs the dance club of the school which is super successful
•married

Jung Jaehyun

•teacher in LMHSS
•education SPAS(sports and performance arts Seoul)(again,I made that up)
•28 years old
•every student crushes on him,super sweet and helpful
•degree in sports and English
•occasionally dances and sings
•married

Lee Taeyong

•teacher in LMHSS+Mark's assistant
•education SOPA
•29 years old
•quiet and strict,but does anything for his students to be happy
•degree in Korean,Literature,Architecture and History
•can dance and rap very well,quick wit
•married

Kim Dongyoung (Doyoung)

•teacher in LMHSS+librarian
•education SOPA
•30 years old
•warm and friendly,students love to talk to him
•degree in Psychology,Music and Literature
•helps the music teacher with the qoir
•married