The 2018 edition of the SDG 4 Data Digest: Data to Nurture Learning builds on last year’s report, which proposed a conceptual framework and tools to help countries improve the quality of their data and fulfil their reporting requirements. In this report, we present the wide range of national and cross-national learning assessments currently underway and the assessment experiences of practitioners in the field. The report draws on these experiences to present pragmatic approaches that can help countries monitor progress and make the best possible use of data for policymaking purposes.