Tools and methods designed to assist colleges in analyzing and managing student attrition are described in this manual. The proposed strategies are intended to help the individual college identify patterns and causes of attrition and to establish reasonable goals and means for reducing attrition. The manual consists of five parts. Part I provides an overview of the issue and addresses the major concerns involved in identifying rates of attrition and possible factors affecting it. Some relationships between this module and other modules of the CASC Planning and Data System are also reviewed. Part II gives a brief overview of the data collection process and instruments. Part III supplies samples of the management information reports provided to data service users and recommends formats for displaying the data to suit specific college needs. Content and format are discussed, and suggestions for methods of interpretation are presented. In Part IV the framework of a systematic, comprehensive, and institutionally-oriented strategy designed to reduce attrition is discussed. Appended are information on the background research, development, and testing of the materials, as well as the rationale for the particular methodology used. (Author/SF)