The organizers were Kogi Shingon Shukei 14 Honzan (Ninna-ji Temple, Hozan-ji Temple, Chogosonshi-ji Temple, Kaju-ji Temple, Daikaku-ji Temple, Daigo-ji Temple, Nakayama-dera Temple (Takarazuka City), Saidai-ji Temple (Nara City), To-ji Temple, Kiyoshikojin Seicho-ji Temple, Sennyu-ji Temple, Zentsu-ji Temple, Suma-dera Temple and Daihonzan Zuishin-in Temple); these temples run the school, and three sects (the Chisan Sect of Shingon, the Buzan Sect of Shingon, and New Shingon) cooperate with the program of educational promotion for Gakkohojin Shingon-shu Kyoto Gakuen.
設置者は、古義真言宗系14本山（仁和寺、宝山寺、朝護孫子寺、勧修寺、大覚寺、醍醐寺、中山寺(宝塚市)、西大寺(奈良市)、東寺、清荒神清澄寺、泉涌寺、善通寺、須磨寺及び大本山随心院）が経営に参画し、真言宗智山派、真言宗豊山派及び新義真言宗の3派が教育振興に協力する学校法人真言宗京都学園。