The Investing in Innovation (i3) Fund was established by the American Recovery and Reinvestment Act of 2009, which called on the U.S. Department of Education (ED) to provide student achievement awards to local education agencies and nonprofits with a record of improving student achievement. ED set priorities for the program and specified them in the program regulations and the invitation for applications. The program awards competitive grants to implement and evaluate educational interventions. The i3 program aligns the amount of funding awarded to the prior evidence on and the expected implementation scale of the proposed intervention. The smallest, or "Development," grants support developing and testing interventions with limited or no prior evidence. Interventions with moderate evidence of effectiveness can receive a larger "Validation" grant, to implement and test the intervention in a broader population or in new contexts. The largest, or "Scale-up," grants support interventions with strong prior evidence of effectiveness to be implemented and tested on a much larger scale. The differential funding and expectations for the three types of grants means that, in effect, i3 operates like three grant programs in one. ED's Office of Innovation and Improvement (OII) administers the i3 program. The i3 program requires grantees to conduct an independent evaluation to build evidence and identify effective educational interventions. OII recognized that credible evidence is needed to identify effective interventions but is challenging to produce. To address this challenge, OII asked the Institute of Education Sciences (IES) to provide support for planning and conducting strong evaluations. IES contracted with Abt Associates Inc. and its partners (the Abt Team) to conduct the i3 Technical Assistance and Evaluation Project. The Abt Team's two key activities were (1) providing technical assistance to support the design and conduct of strong evaluations, and (2) assessing the strength of and summarizing the findings from the i3 evaluations. This project built on prior work supporting grants with a requirement to conduct rigorous evaluations. This first report of the i3 Technical Assistance and Evaluation Project summarizes the strength of and findings from the 67 i3 evaluations that were completed by May 2017. In addition, this report summarizes the extent to which the i3 program met its goal of contributing to the evidence base on effective educational interventions.