Array
(
    [1885] => Array
        (
            [parent_category_id] => 1885
            [parent_category] => Array
                (
                    [id] => 1885
                    [slug] => business-finance
                    [name] => Business and Finance
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Finance
                            [slug] => finance
                            [id] => 1890
                        )

                )

        )

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

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

                )

        )

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

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Calculus
                            [slug] => calculus
                            [id] => 1730
                        )

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

                    [2] => Array
                        (
                            [name] => Precalculus
                            [slug] => precalculus
                            [id] => 1728
                        )

                    [3] => Array
                        (
                            [name] => Statistics
                            [slug] => statistics
                            [id] => 1736
                        )

                )

        )

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

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Biochemistry
                            [slug] => biochemistry
                            [id] => 1751
                        )

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

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

                    [3] => Array
                        (
                            [name] => Organic Chemistry
                            [slug] => organic-chemistry
                            [id] => 1754
                        )

                )

        )

    [1903] => Array
        (
            [parent_category_id] => 1903
            [parent_category] => Array
                (
                    [id] => 1903
                    [slug] => special-needs-learning
                    [name] => Special Needs and Learning Support
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Homeschool
                            [slug] => homeschool
                            [id] => 1905
                        )

                    [1] => Array
                        (
                            [name] => Study Skills
                            [slug] => study-skills
                            [id] => 1910
                        )

                )

        )

)