This tool is intended to support state and local education agencies in developing a statistical model for estimating student postsecondary success at the school or district level. The tool guides education agency researchers, analysts, and decisionmakers through options to consider when developing their own model. The resulting model generates an indicator of a school's or district's contribution to the postsecondary success of its students after contextual factors are accounted for that might be outside a school's or district's control, such as student demographic characteristics and community characteristics. State and local education agencies could use the information generated by the models they develop to help meet federal and state reporting requirements and to inform their own efforts to improve their students' postsecondary success.