The Programme for the International Assessment of Adult Competencies (PIAAC) is a programme of assessment and analysis of adult skills. The major survey conducted as part of PIAAC is the Survey of Adult Skills. The Survey measures adults’ proficiency in key information-processing skills - literacy, numeracy and problem solving - and gathers information and data on how adults use their skills at home, at work and in the wider community.

This international survey is conducted in over 40 countries/economies and measures the key cognitive and workplace skills needed for individuals to participate in society and for economies to prosper.

Learn more about how we measure and collect data. 

Download here the Public Use Files (PUF), codebooks, background questionnaires and all materials needed to undertake your own analysis of the PIAAC data

Create an interactive data profile for your country.

Read about the results from the Survey of Adult Skills: Skills Matter - Additional Results from the Survey of Adult Skills

Browse through a selection of publications, thematic reports and working papers.

Browse a selection of OECD country notes, national reports, and interactive country profiles.

Education & Skills Online is an assessment tool designed to provide individual-level results that are linked to the PIAAC measures of literacy, numeracy and problem solving and can be benchmarked against the national and international results available for the participating countries.  In addition, the assessment contains non-cognitive measures of skill use, career interest, health and well-being, and also behavioral competencies.

Learn more.

Take the test.