Mental health quality of care evaluation systems found in an extensive search are reviewed. The quality measures are differentiated from other seemingly simi lar types of scales and instruments. The quality systems are reviewed in reference to 1) reliability and validity of data, type, and source of data, allowance for patient variables, standards of quality, and other parameters and 2) range and comprehensiveness, particularly with regard to coverage of the range of disorders and condi tions, of age groups, care needs, care settings, treat ment modalities, and of types of provider performance. Most measures were reliable and valid. Some gave con sideration to patient variables and case mix, to timing, and to treatment intensity. There were no measures of providers' interpersonal performance. With regard to range and comprehensiveness, there was a substantial imbalance toward the medical model and pharmacother apy and away from systems orientation, from psycho therapy, and from other modalities, interventions, and types of programs.