"A Guide to Expanding Medicaid-Funded School Health Services" provides background on school-based Medicaid and outlines various opportunities to advance state policy changes required to access federal funds. In December 2014, the Centers for Medicare and Medicaid Services clarified Medicaid reimbursement in school-based settings, opening the door to more funding. This Guide covers best practices for bringing state Medicaid plans into alignment with federal policy, designing the administrative processes, and tackling other obstacles to improving student access to care. It also covers building a sustainable funding structure and offers concrete lessons for collaboration among agencies. It is designed for anyone working to expand access to school health services, including state and local education agency staff, state Medicaid agencies, school health providers, public health professionals and children's health advocates. All of these stakeholders share a common goal: improve student health and educational outcomes.