International development addresses problems that reach across borders and affect millions of people, requiring broadly applicable tools that can be sustainably applied across sectors. To do this, innovative solutions need to be effectively scaled, and this requires not only a separate skills set, but a separate evaluation lens. For over a decade, Management Systems International (MSI) has worked with the McArthur Foundation and others to improve the assessment of innovative interventions for scalability by focusing on external validity and monitoring quality at scale. Scaling-up interfaces with evaluations at three distinct points: in the program design phase; in the post-pilot assessment phase; and in assessing performance at scale. This paper session will take participants through MSI's Scale-Up Framework focusing on the post-pilot assessment phase: demonstrating how going beyond the technical intervention to assessing the operational environment generates evidence for change management, which is heart of scaling up.#2013Conference #TheoriesofEvaluation #scale #ProgramTheoryandTheoryDrivenEvaluation #AdvocacyandPolicyChange #EvaluationUse