The Abdul Latif Jameel Poverty Action Lab (J-PAL) is a global network of economic researchers who share a dedication to promoting the use of randomized controlled trials (RCTs) in economics as a way of generating real and reliable solutions to important social problems. J-PAL’s 170 affiliated researchers have conducted more than 800 high-quality RCTs since its founding on a wide range of issues including poverty, crime, discrimination, education, and voting behavior. The network has also trained some 1,500 researchers on how to effectively design and implement randomized controlled trials and has launched and promoted an RCT registry now housed at the American Economic Association.   This grant supports a new initiative by J-PAL Global, called Innovations in Data and Experiments (IDEA), which aims to facilitate and improve researcher access to and use of administrative data. J-PAL Global will encourage data holders to work with researchers, provide technical, legal, and practical guidance to researchers who want to work with administrative data, and help avoid duplicate efforts to obtain, clean, and document administrative datasets. Grant funds will support IDEA’s core technical staff, two pilot projects in the United States, and the creation of several handbooks and workshops on using administrative data in economic experiments.