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            [parent_category] => Array
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                    [slug] => history-social-studies
                    [name] => History and Social Studies
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            [subcategories] => Array
                (
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                        (
                            [name] => Psychology
                            [slug] => psychology
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                )

        )

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            [parent_category] => Array
                (
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                    [slug] => math
                    [name] => Math
                )

            [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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                        (
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                            [slug] => algebra-2
                            [id] => 1726
                        )

                    [3] => Array
                        (
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                            [slug] => elementary-math
                            [id] => 1743
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                        (
                            [name] => Geometry
                            [slug] => geometry
                            [id] => 1727
                        )

                    [5] => Array
                        (
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                            [slug] => prealgebra
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                            [slug] => precalculus
                            [id] => 1728
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                        (
                            [name] => Probability
                            [slug] => probability
                            [id] => 1735
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                        (
                            [name] => SAT Math
                            [slug] => sat-math
                            [id] => 1740
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                        (
                            [name] => Statistics
                            [slug] => statistics
                            [id] => 1736
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                    [10] => Array
                        (
                            [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
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                        (
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                            [slug] => cbest
                            [id] => 1868
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