This report explores access to school-site health and mental health services among the general population of K-12 public school students in California. These general health services are a major part of some schools' operations, yet they often "fly under the radar" of both education policy and health policy discussions (Lear, 2007). Across California, some public schools offer universal access to health and mental health services through one or more of six mechanisms: (1) Staff Employed by School Districts; (2) Fee-for-Service Providers via Medi-Cal Funding; (3) School-Based Health Centers; (4) Mobile Health Clinics; (5) Other Partnerships with Non-Profit Organizations; and (6) Partnerships with Government Agencies. This report investigates the following questions about these services in California: (1) How does California compare to other states in terms of policies and the rates of service provision? (2) What fraction of California's public school students have access to the various types of care described above? How does access vary by student characteristics? How does access vary by school and community characteristics? and (3) Given the inconsistent supply of health and mental health provision across California's public schools, what policy options are available to ensure that students do not "fall through the cracks"? What are the cost of these options? [For "Investments in Students' Physical and Mental Health in California's Public Schools. Research Brief. Getting Down to Facts II," see ED594707.]