This chapter outlines the progress of ELC-awarded states in building or enhancing state early learning data systems. In the fall of 2014, ECDC conducted interviews with 7 of the 10 grantees that had both prioritized data systems development goals in their applications and completed at least one year of the grant cycle. The seven states are Maryland, Minnesota, North Carolina, Rhode Island, Illinois, Oregon and Wisconsin. In addition to the interviews, ECDC reviewed states' initial applications and most recent progress reports. (author abstract)