The Progress in International Reading Literacy Study (PIRLS) is a worldwide research project run by the IEA. It takes place every five years and provides data about trends in reading literacy in primary schools. The most recent set of results are available from the 2016 study.
|PIRLS 2016 in Northern Ireland: Reading Achievement|
|PIRLS 2011 report for Northern Ireland||PIRLS 2011 report for England|