Array
(
    [1760] => Array
        (
            [parent_category_id] => 1760
            [parent_category] => Array
                (
                    [id] => 1760
                    [slug] => english-reading
                    [name] => English and Reading
                )

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

                    [1] => Array
                        (
                            [name] => Handwriting
                            [slug] => handwriting
                            [id] => 1768
                        )

                    [2] => Array
                        (
                            [name] => Reading
                            [slug] => reading
                            [id] => 1763
                        )

                    [3] => Array
                        (
                            [name] => Spelling
                            [slug] => spelling
                            [id] => 1769
                        )

                    [4] => Array
                        (
                            [name] => Vocabulary
                            [slug] => vocabulary
                            [id] => 1765
                        )

                    [5] => Array
                        (
                            [name] => Writing
                            [slug] => writing
                            [id] => 1764
                        )

                )

        )

    [1872] => Array
        (
            [parent_category_id] => 1872
            [parent_category] => Array
                (
                    [id] => 1872
                    [slug] => health-medical
                    [name] => Health and Medical
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Pharmacology
                            [slug] => pharmacology
                            [id] => 1876
                        )

                )

        )

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

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Algebra 1
                            [slug] => algebra-1
                            [id] => 1725
                        )

                    [1] => Array
                        (
                            [name] => Common Core
                            [slug] => common-core
                            [id] => 1739
                        )

                    [2] => Array
                        (
                            [name] => Elementary Math
                            [slug] => elementary-math
                            [id] => 1743
                        )

                    [3] => Array
                        (
                            [name] => Linear Algebra
                            [slug] => linear-algebra
                            [id] => 1733
                        )

                    [4] => Array
                        (
                            [name] => Prealgebra
                            [slug] => prealgebra
                            [id] => 1724
                        )

                )

        )

    [1744] => Array
        (
            [parent_category_id] => 1744
            [parent_category] => Array
                (
                    [id] => 1744
                    [slug] => science
                    [name] => Science
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Elementary Science
                            [slug] => elementary-science
                            [id] => 1759
                        )

                )

        )

)