Array
(
    [1840] => Array
        (
            [parent_category_id] => 1840
            [parent_category] => Array
                (
                    [id] => 1840
                    [slug] => art-design
                    [name] => Art and Design
                )

            [subcategories] => Array
                (
                    [0] => Array
                        (
                            [name] => Art History
                            [slug] => art-history
                            [id] => 1841
                        )

                )

        )

    [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] => Nutrition
                            [slug] => nutrition
                            [id] => 1873
                        )

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

                )

        )

    [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] => American History
                            [slug] => american-history
                            [id] => 1773
                        )

                    [1] => Array
                        (
                            [name] => Anthropology
                            [slug] => anthropology
                            [id] => 1782
                        )

                    [2] => Array
                        (
                            [name] => Archaeology
                            [slug] => archaeology
                            [id] => 1784
                        )

                    [3] => Array
                        (
                            [name] => Criminal Justice
                            [slug] => criminal-justice
                            [id] => 1780
                        )

                    [4] => Array
                        (
                            [name] => European History
                            [slug] => european-history
                            [id] => 1774
                        )

                    [5] => Array
                        (
                            [name] => Geography
                            [slug] => geography
                            [id] => 1776
                        )

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

                    [7] => Array
                        (
                            [name] => Psychology
                            [slug] => psychology
                            [id] => 1781
                        )

                    [8] => Array
                        (
                            [name] => Social Studies
                            [slug] => social-studies
                            [id] => 1779
                        )

                    [9] => Array
                        (
                            [name] => World History
                            [slug] => world-history
                            [id] => 1775
                        )

                )

        )

    [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
                        )

                    [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] => Anatomy
                            [slug] => anatomy
                            [id] => 1749
                        )

                    [1] => Array
                        (
                            [name] => Biology
                            [slug] => biology
                            [id] => 1746
                        )

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

                    [3] => Array
                        (
                            [name] => Ecology
                            [slug] => ecology
                            [id] => 1755
                        )

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

                    [5] => Array
                        (
                            [name] => Genetics
                            [slug] => genetics
                            [id] => 1753
                        )

                    [6] => Array
                        (
                            [name] => Microbiology
                            [slug] => microbiology
                            [id] => 1752
                        )

                )

        )

    [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] => ADHD
                            [slug] => adhd
                            [id] => 1907
                        )

                    [1] => Array
                        (
                            [name] => Dyslexia
                            [slug] => dyslexia
                            [id] => 1909
                        )

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

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

                )

        )

    [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] => GED
                            [slug] => ged
                            [id] => 1866
                        )

                    [1] => Array
                        (
                            [name] => MCAT
                            [slug] => mcat
                            [id] => 1865
                        )

                )

        )

)