This guidebook consists of three parts. The first part is an introductory overview focusing on where mental health facets of school-based health centers (SBHC) fit into the work of schools. The second part is made up of three modules, each containing a set of units and resource aids focusing on day-by-day SBHC operational considerations and concerns related to the following: approaching the problem of limited resources not only as one of fundraising but as a major reason for integrating center activity with school and community efforts; specific facets of working with students who come to the center; and approaching evaluation as a process of getting credit for work done by school counselors. The third part is a coda that highlights ways to and benefits of integrating the resources available for addressing barriers to student learning into a comprehensive, integrated approach. A glossary of key terms, acronyms, and laws is provided. (MKA)