The document outlines the OECD's Programme for International Student Assessment (PISA), which assesses 15-year-old students in reading, mathematics, and science every three years to evaluate their preparedness for adult life in a knowledge society. It includes sample questions from past assessments and discusses the purpose of PISA in informing educational policy through empirically grounded data on student achievement across multiple countries. The report also details how the assessments are designed, administered, and analyzed to provide insights that support educational improvements.