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            [parent_category] => Array
                (
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                    [slug] => computer-technology
                    [name] => Computer and Technology
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            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => C
                            [slug] => c
                            [id] => 1827
                        )

                    [1] => Array
                        (
                            [name] => Computer Science
                            [slug] => computer-science
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                        )

                    [2] => Array
                        (
                            [name] => Python
                            [slug] => python
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            [parent_category] => Array
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                    [slug] => engineering
                    [name] => Engineering
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Electrical Engineering
                            [slug] => electrical-engineering
                            [id] => 1882
                        )

                )

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            [parent_category] => Array
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                    [slug] => english-reading
                    [name] => English and Reading
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            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => SAT Reading
                            [slug] => sat-reading
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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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                        (
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                            [slug] => algebra-1
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                    [1] => Array
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                            [slug] => algebra-2
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                        (
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                            [slug] => calculus
                            [id] => 1730
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                    [3] => Array
                        (
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                            [slug] => geometry
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                        (
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                            [slug] => sat-math
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                            [slug] => trigonometry
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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] => Chemistry
                            [slug] => chemistry
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        )

)