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            [parent_category] => Array
                (
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                    [slug] => art-design
                    [name] => Art and Design
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Adobe Photoshop
                            [slug] => adobe-photoshop
                            [id] => 1843
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                )

        )

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

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => SAT Reading
                            [slug] => sat-reading
                            [id] => 1770
                        )

                )

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            [parent_category] => Array
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                    [slug] => health-medical
                    [name] => Health and Medical
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            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => NCLEX
                            [slug] => nclex
                            [id] => 1879
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                    [1] => Array
                        (
                            [name] => Nursing
                            [slug] => nursing
                            [id] => 1875
                        )

                    [2] => Array
                        (
                            [name] => USMLE
                            [slug] => usmle
                            [id] => 1878
                        )

                )

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            [parent_category] => Array
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                    [id] => 1723
                    [slug] => math
                    [name] => Math
                )

            [subcategories] => Array
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                        (
                            [name] => ACT Math
                            [slug] => act-math
                            [id] => 1741
                        )

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                        (
                            [name] => Algebra 1
                            [slug] => algebra-1
                            [id] => 1725
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                        (
                            [name] => Algebra 2
                            [slug] => algebra-2
                            [id] => 1726
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                    [3] => Array
                        (
                            [name] => Geometry
                            [slug] => geometry
                            [id] => 1727
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                    [4] => Array
                        (
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                            [slug] => prealgebra
                            [id] => 1724
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                            [name] => Precalculus
                            [slug] => precalculus
                            [id] => 1728
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                        (
                            [name] => SAT Math
                            [slug] => sat-math
                            [id] => 1740
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            [parent_category] => Array
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                    [slug] => science
                    [name] => Science
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            [subcategories] => Array
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                        (
                            [name] => Biology
                            [slug] => biology
                            [id] => 1746
                        )

                    [1] => Array
                        (
                            [name] => Chemistry
                            [slug] => chemistry
                            [id] => 1747
                        )

                    [2] => Array
                        (
                            [name] => Physical Science
                            [slug] => physical-science
                            [id] => 1745
                        )

                    [3] => Array
                        (
                            [name] => Physics
                            [slug] => physics
                            [id] => 1748
                        )

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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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                        (
                            [name] => ACT Science
                            [slug] => act-science
                            [id] => 1870
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                    [1] => Array
                        (
                            [name] => MCAT
                            [slug] => mcat
                            [id] => 1865
                        )

                    [2] => Array
                        (
                            [name] => SAT Writing
                            [slug] => sat-writing
                            [id] => 1871
                        )

                )

        )

)