Testing programs are often classified as high or low stakes to indicate how stringently they need to be evaluated. However, in practice, this classification falls short. A high-stakes label is taken to imply that all indicators of measurement quality must meet high standards; whereas a low-stakes label is taken to imply the opposite. This approach…

This paper provides a history of ETS's role in developing assessment instruments and psychometric procedures for measuring change in large-scale national assessments funded by the Longitudinal Studies branch of the National Center for Education Statistics. It documents the innovations developed during more than 30 years of working with…