[citation needed] September 1, 1904: Ha Jung Min-hwi retooled 'Gwangseong Uisook'(廣成義塾)[1] May 1, 1906: Ha Jeong Min-hwi founded the school and opened it under the school name 'Hwimun(徽文)' given by Emperor[2] 1907: Foundation of the baseball team[3] March 1910: The first graduation ceremony of Whimun Uisuk was held (32 graduates)[4] January 1918: renamed 'private whimoon high school' (4 years)[5] 1921: Foundation of the 'Korean Language Research Society' (the parent body of the 'Korean Language Society') by gathering teachers and alumni, including the principal Lim Kyung-jae[6] 1925: The Basketball Club was founded[7] August 1951: Middle and high schools were separated according to the reorganization of the school system and renamed 'whimoon High School' (3-year system)[8] February 1978: relocated the teacher from Boljae (Wonwon-dong, Jongno-gu) where it has been for 72 years to its current location (Daechi-dong, Gangnam-gu)[9] March 2011: Authorized as an autonomous private high school[10] February 2018: The 110th graduation ceremony is held[11] The school was first opened as Kwangsŏngŭisuk (광성의숙; 廣成義塾) in 1904 by Min Yŏng-hwi [ko], nephew of Empress Myeongseong.

At that time, all schoolboys had to keep a military-style buzz cut and had to abide by a very strict dress code.

However, Whimoon did not require its boys to adhere to that mandated hair and dress code.

Instead, their students were only expected to maintain a neat appearance and had several types of uniforms to choose from, which was unheard of.

Whimoon High School is an early pioneer in championing the notion of the "student-athlete" in South Korean education.

Students were encouraged to join a sports club to complement their academic pursuits.