This monograph summarizes the development of the Pupil Observation Survey Report (POSR), an instrument designed to be completed by pupils in junior and senior high school classes in order to describe their teachers. The instrument consists of 38 statements followed by four choice agreement scales. Data from a single class are reduced to item means and then to scores on six factor dimensions isolated by analysis of over 100 student teachers studied in the Mental Health in Teacher Education project at the University of Texas. The monograph reviews the various published research studies on the development and applications of the instrument and includes a FORTRAN computer program for scoring the raw protocols. An example of an IBM 1230 optical-scanned answer sheet for the instrument is also included. Comparisons of factor structures obtained from analysis of data describing large samples of male and female teachers are reported, as well as an extensive series of regression analyses concerning various potential influences on pupil evaluation of teachers. This instrument is currently in use in a number of experimental studies being carried out by the R & D Center in Teacher Education. (Author)