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

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => ACT English
                            [slug] => act-english
                            [id] => 1771
                        )

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

                    [2] => Array
                        (
                            [name] => Literature
                            [slug] => literature
                            [id] => 1766
                        )

                    [3] => Array
                        (
                            [name] => Proofreading
                            [slug] => proofreading
                            [id] => 1767
                        )

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

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

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

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

                )

        )

    [1772] => Array
        (
            [parent_category_id] => 1772
            [parent_category] => Array
                (
                    [id] => 1772
                    [slug] => history-social-studies
                    [name] => History and Social Studies
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Political Science
                            [slug] => political-science
                            [id] => 1778
                        )

                )

        )

    [1699] => Array
        (
            [parent_category_id] => 1699
            [parent_category] => Array
                (
                    [id] => 1699
                    [slug] => languages
                    [name] => Languages
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => English
                            [slug] => english
                            [id] => 1704
                        )

                )

        )

    [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] => Elementary Math
                            [slug] => elementary-math
                            [id] => 1743
                        )

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

                )

        )

    [1856] => Array
        (
            [parent_category_id] => 1856
            [parent_category] => Array
                (
                    [id] => 1856
                    [slug] => test-prep-exams
                    [name] => Test Prep and Exams
                )

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

                )

        )

)