A survey was conducted of 687 teachers and 768 administrators on the implementation and perceptions of Colorado's mandated certificated personnel performance evaluation system, which requires that all school districts adopt performance standards for certificated personnel and that all administrators receive training in personnel evaluation skills. The survey found that the personnel evaluation system seems well established. Essentially all teachers (96 percent) had been evaluated within the last 3 years. Nearly all administrators (94 percent) reported that they had received evaluator training. More than 90 percent of teachers and administrators said standards in their district were clear and understandable. Administrators, and to a lesser extent teachers, felt the evaluation system had helped the quality of the evaluations. Three-quarters of administrators and over half of teachers felt the system had helped improve instruction in the school. When analyzed by level of school (elementary-secondary) or district setting (urban-rural), there were few differences. Copies of the teacher and administrator questionnaire are appended. (JDD)