An ad-hoc committee will plan and conduct a public workshop to explore criteria for identifying highly successful practices in the area of STEM education in out-of-school settings, with a focus on designed settings and programs targeted at children and youth, through examination of a select set of examples. The committee will determine some initial criteria for nominating successful practices to be considered at the workshop. The examples included in the workshop must have been studied in enough detail to provide evidence to support claims of success. Discussions at the workshop will focus on refining criteria for success, exploring models of “best practice,” and an analysis of factors that evidence indicates lead to success. The discussion from the workshop will be synthesized and combined with a literature review of peer-reviewed and grey-literature publications for a short, committee-authored consensus report that would outline criteria for identifying effective out-of-school STEM settings and programs and identify those criteria for which data are readily available and those where further work is needed to develop appropriate data sources.