Models for evaluating mental health treatment include the organizational model, the care-process model, the consumer-evaluation model, the efficacy model, and the community-impact model. Although organizational data (such as type of programs, number of personnel, amount of available funds, and quality of practitioners' training) are most frequently used to assess mental health centers, the author discusses the data generated by each of the other models. He also examines the advantages and disadvantages of applying such data to the evaluation of mental health services.