Questionnaires were administered to the staffs of two elementary schools as part of a program to identify salient forces within schools that facilitate or inhibit the implementation of educational innovations. One school, an "experimental" school, was engaged in a district differentiated staffing project; the other, a "control" school, was a…

This paper illustrates the need for full description and measurement of differences between "experimental" and "control" situations in school program evaluation studies. Two studies were completed at the University of Oregon involving the innovative program--differentiated staffing (DS). The first study, a doctoral investigation, sought to assess…