Moi Siongiroi Girls’ High Senior School: Full details, location, CBE Subjects Offered MOI SIONGIROI GIRLS’ SENIOR SCHOOL LOCATION. Moi Siongoroi Girls‘ Secondary School is a religious organization sponsored girls boarding school located in Siongiroi Sub location, in Bomet County. The school is a national school classified as… Moi Siongiroi Girls’ High Senior School: Full details, location, CBE Subjects Offered