This brief presents a review of research and current state practices as they relate to measures that Iowa might consider for its federal accountability indicator of school quality or student success--specifically, for inclusion within a composite index of postsecondary readiness. Section 1 of this brief introduces a framework for evaluating and selecting measures of postsecondary readiness for accountability, reviews the four components of Iowa's DCCR, and summarizes the research on the relationship between measures of postsecondary readiness and student postsecondary outcomes embedded in the four components of Iowa's DCCR. Section 2 summarizes current practices on the use of measures of postsecondary readiness in other states.