The Joint Committee on Standards for Educational Evaluation, under the direction of Daniel Stuffelbeam, completed standards for the practice of evaluation. Little is known about the extent of congruence between evaluation practice and the ideal as represented by the standards. The purpose of the study was to obtain information regarding how evaluation practitioners who are members of the California Association of Program Evaluators throughout the State, perceive the: (1) extent to which each standard is an ideal to be sought; (2) degree to which each standard is currently being performed by practitioners; and (3) major reasons why selected standards are currently not being met. An overall average of 97.6% of the respondents indicated the thirty standards as a whole should be retained as important ideals to guide the process and practice of evaluating school programs. The overall perception of the degree to which each standard is currently being performed was indicated to be less than a 3.0 rating on a five-point scale. The predominate single reason provided for low quality practice was a combination of evaluator incompetence, especially regarding standards emphasizing technical or design features, and bureaucratic/political constraints. (Author/RL)