This booklet has been prepared for the international release of the 2016 Progress in International Reading Literacy Study (PIRLS) and ePIRLS at UNESCO. PIRLS is one of the International Association for the Evaluation of Educational Achievement’s (IEA) core largescale international assessment projects, successfully administered every five years since 2001. It provides internationally comparative data on how well children read by assessing grade 4 students’ reading achievement and offers policyrelevant information for improving teaching and learning. Initiated in 2016, ePIRLS is an extension of PIRLS that monitors how well grade 4 students read, interpret, and critique online information in an environment that looks and feels like the Internet.