School based health centers (SBHC) are effective providers of health services and education because they are easy for students to access, they take an integrated and developmentally appropriate approach to meeting health needs, and they are prevention-oriented. This report describes the 1996-1997 services provided in 15 of 19 state-supported school-based health centers in Oregon. The report describes the staff of SBHCs, the services provided, the role of advisory boards and families, funding sources, and typical teen health problems. Preliminary data from the Oregon's Adolescent Hepatitis B Immunization Program are presented as providing a convincing case for preventive health care. The experience of one high school student with potential head injury is described, highlighting the role of the SBHC in obtaining the needed medical evaluation. Information is presented on student use of SBHCs, the types of risk factors exhibited, the most frequent diagnoses, and provider time and type. Site-level information for 20 SBHCs is provided, including information on the school, hours of operation, staffing and clinic hours per week, number of student visits, and number of students served. Profiles are included for 15 SBHCs, providing information on the services provided, the average age of clients, the average number of visits, and the average number of risks per client. A map details the location of the SBHCs. (KB)