This casebook provides a reference and technical assistance tool for citizens and consumers with varying levels of knowledge or experience in the field of evaluation and monitoring, focusing on mental health centers. The purposes of this casebook and current knowledge about citizen evaluation are discussed. The 51 case summaries presented are grouped into these categories: (1) the evaluator's place in the mental health system; (2) extent of involvement of evaluators; (3) scope of coverage of evaluation; (4) focus of evaluation; and (5) procedures for evaluation. The format for case studies consists of a summary, type of organization evaluated, description of evaluators, reasons for evaluation, level of participation, target of evaluation, problems or issues evaluated, techniques used, findings of evaluation activities, recommendations, steps to ensure implementation, extent of implementation, special barriers to or support for evaluation, resources and costs, additional comments, and contact person. References and a glossary of terms are included. (ABL)