This comprehensive review is part of a three-part report, Follow the "Money: A Detailed Analysis of the Funding Mechanisms of Voucher Programs in Six Cases"; this review contains the cross-case analysis and findings of the funding mechanisms of voucher programs across five states (Arizona, Indiana, Louisiana, Ohio, and Wisconsin) and the District of Columbia. The complete report includes this cross-case review, data visualizations of enrollment and funding patterns, and detailed profiles of each individual case. This comprehensive review discusses the primary patterns in similarities and differences observed across cases; these patterns include impacts on local revenue sources and state spending, student eligibility policies, enrollment count and categorical funding, and fiscal accountability. [For the related reports, "Understanding How School Vouchers Are Funded: Summary of Funding for the Indiana Choice Scholarship Program. Informing Policy & Improving Practice Research Brief," see ED574824; "Understanding How School Vouchers Are Funded: Summary of Funding for Wisconsin's Three Parental Choice Programs. Informing Policy & Improving Practice Research Brief," see ED574825; "Understanding How School Vouchers Are Funded: Summary of Funding for Ohio's Cleveland Scholarship and EdChoice Programs. Informing Policy & Improving Practice Research Brief," see ED574826; "Understanding How School Vouchers Are Funded: Summary of Funding for Arizona's Empowerment Scholarship Accounts. Informing Policy & Improving Practice Research Brief," see ED574827; "Understanding How School Vouchers Are Funded: Summary of Funding for the Louisiana Scholarship Program. Informing Policy & Improving Practice Research Brief," see ED574828; and "Understanding How School Vouchers Are Funded: Summary of Funding for the District of Columbia's Opportunity Scholarship Program. Informing Policy & Improving Practice Research Brief," see ED574829.]