Praxis III is an assessment procedure that provides information for making instructional and licensing decisions about beginning teachers. The Praxis III Assessor's job is to interview the beginning teacher, observe the teacher in the classroom, score the teacher's performance on 19 criteria, and summarize the evidence for each score. The Assessor Proficiency Test (APT) consists of performing the assessor's task for a videotaped lesson. It yields two scores: accuracy and documentation. In this study, 5 judges (developers of the Praxis III assessment) evaluated the accuracy and documentation of APT records produced by 15 assessor trainees. Documentation judgments were made by group consensus; accuracy judgments were individual. Logistic regression analysis showed that both types of judgments were strongly related to the corresponding APT scores, but the judges' individual standards for accuracy varied greatly. Seven tables and two figures present study data. (Author/SLD)