CREATE TABLE table_name_15 (junior_high_school__12_15_yrs_ VARCHAR(255), university_students_and_adults__18yrs VARCHAR(255), _ VARCHAR(255))
Which junior high school has university students and adults of 26mm?
    
SQL: SELECT junior_high_school__12_15_yrs_ FROM table_name_15 WHERE university_students_and_adults__18yrs + _ = "26mm"