Given the current emphasis on conducting high-quality experimental studies, it is becoming increasingly important for researchers to accompany their studies with evaluations of the "fidelity of implementation" of the experimental treatments. This article compares the form and extent of an experimental treatment to student learning. The study…

A method to investigate consequential evidence of validity for a state assessment developed to change teacher instructional practices is presented. Survey responses from over 1,000 Kansas teachers were used to construct a path model that allowed effects of the state assessment to be studied at building and teacher levels. (SLD)