In Chapter I the phenomenon of institutionalization was briefly introduced, and Chapter II examined community service programs and the independent school organizational context. The next five chapters are case studies that describe the development, implementation, and operation of community service programs at five independent schools from the perspective of program institutionalization. This introduction to the case studies will: present and explain the research-based indicators of institutionalization that appear to influence both the institutionalization process and, in some cases, signify that institutionalization has, in fact, occurred; outline the multiple sources of data used to develop the case studies; explain the criteria used to select the five case study schools; and, finally, describe the format used in each case study and explain, where appropriate, how the indicators are associated with certain sections in the case studies.