@departments = (
    {
        department => "v6"
        classes => [
            {
                class      => "Chemistry",
                department => "v6",
                count      =>  18
            },
            {
                class      => "German I",
                department => "v6",
                count      => 27
            },

           etc ...
        ]
    },
    {
        department => "h4"
        classes => [
            {
                class      => "French II",
                department => "h4",
                count      => 9
            },

            etc ...
        ]
     },

     etc ...
);