upper moons school

so Muzan and upper moons are teachers and lower moons is student's so Enmu (Lower Moon One), Rokuro (Lower Moon Two), Wakuraba (Lower Moon Three), Mukago (Lower Moon Four), Rui (Lower Moon Five), and Kamanue (Lower Moon Six) are year 9 and 12 Rui Wakuaba and Mukago in Akaza class for English and Douma for home economics /cooking and baking and Kamanue and Emnu in Kokushibo class for maths and Daki and Gyutaro for Learning for life and Gyokko for art class and Muzan just principal and Rokuro and Rui and Wakuraba and Mukago in your class because you teach music and Korea in other class so there will be substitute teacher to cover for music or Korean class