An effective performance evaluation system is an essential part of an agencys and an officers development. Evaluating performance is one of the most difficult jobs of any supervisor. There is no "magic formula" or "set procedure" which guarantees success. In this study, selected best practices of performance evaluation systems are compared and a new form is developed to help practitioners in criminal justice area. The main goal of this thesis was to examine the performance evaluations forms, procedures and criteria used in five police departments in the United States. Evaluation...