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            [parent_category] => Array
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                    [slug] => english-reading
                    [name] => English and Reading
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Grammar
                            [slug] => grammar
                            [id] => 1761
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                )

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            [parent_category] => Array
                (
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                    [slug] => math
                    [name] => Math
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            [subcategories] => Array
                (
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                        (
                            [name] => ACT Math
                            [slug] => act-math
                            [id] => 1741
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                        (
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                            [slug] => algebra-1
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                            [slug] => algebra-2
                            [id] => 1726
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                        (
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                            [slug] => elementary-math
                            [id] => 1743
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                    [4] => Array
                        (
                            [name] => Geometry
                            [slug] => geometry
                            [id] => 1727
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                    [5] => Array
                        (
                            [name] => Prealgebra
                            [slug] => prealgebra
                            [id] => 1724
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                        (
                            [name] => SAT Math
                            [slug] => sat-math
                            [id] => 1740
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                        (
                            [name] => Trigonometry
                            [slug] => trigonometry
                            [id] => 1729
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            [parent_category] => Array
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                    [slug] => test-prep-exams
                    [name] => Test Prep and Exams
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            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => ACT Science
                            [slug] => act-science
                            [id] => 1870
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)