The International Computer and Information Literacy Study (ICILS) studied the extent to which young people have developed computer and information literacy (CIL) to support their capacity to participate in the digital age. ICILS is a response to the increasing use of information and communication technology (ICT) in modern society and the need for citizens to develop relevant skills in order to participate effectively in the digital age. It also addresses the necessity for policymakers and education systems to have a better understanding of the contexts and outcomes of CIL-related education programs in their countries. ICILS is the first crossnational study commissioned by the International Association for the Evaluation of Educational Achievement (IEA) to collect student achievement data on computer.