Innovation to Impact: Introduction to the Special Issue on Evidence from the Teen Pregnancy Prevention Program Experiment with Innovation.

Congress has provided funding for the federal Teen Pregnancy Prevention (TPP) Program since 2009 for spending beginning in Fiscal Year 2010. Designated TPP programs develop, test, and evaluate innovations for reducing teen pregnancy, teen pregnancy disparities, and associated risk factors and for promoting positive youth development. Since its inception, the TPP Program has experimented with multiple uniquely structured cohorts of innovation and demonstration projects, producing critical insights into equitable and effective public health innovation while also serving as a highly productive contributor of evidence-based, TPP innovations for scale. This article briefly documents the innovation history of the TPP Program and its iterations in response to the shifting needs of the field. We then synthesize findings from the fifteen TPP innovators published in this special edition. We highlight emergent priorities of the TPP Program informed by this federal experiment in rigorous adolescent sexual health innovation development, testing, evaluation, and scaling and conclude by discussing how the TPP program adapted and refined its approach for fostering dynamic innovation-to-scale projects over time.