(def School_grades
    {0 {:grades 41 :Change "↑"}
     1 {:grades 42 :Change "↓"}
     2 {:grades 21 :Change "→"}
     3 {:grades 32 :Change "↑↑"}
     4 {:grades 16 :Change "↑"}
     5 {:grades 8 :Change "↓↓"}
     })

(get-in School_grades [1 :Change])