Survey of Adult Skills (PIAAC)

The Programme for the International Assessment of Adult Competencies (PIAAC) developed and conducts the Survey of Adult Skills. The survey measures adults’ proficiency in key information-processing skills - literacy, numeracy and problem solving in technology-rich environments - 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 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. 

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View the sample questions and questionnaire.

Take the full Education & Skills Online test which measures adult skills in literacy, numeracy and problem solving in technology-rich environments.

Explore the full data sets and questionnaires.


Create an interactive data profile for your country.

Release of the second international report for the Survey of Adults Skills

Skills Matter: Further Results from the Survey of Adult Skills

The Survey of Adult Skills, Readers Companion

Webinar by Andreas Schleicher, OECD

Blog posts on Education Today and OECD Skills and Work

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

Skills Matter - Further Results from the Survey of Adult Skills

Browse a selection of publications, technical reports and working papers.

In focus - Adult Skills in Focus

Seminar on 'Managing the Quality of Data Collection in Large Scale Assessments', 11-12 May 2017, OECD Headquarters, Paris, France

CALL FOR PAPERS - 4th PIAAC International Conference
22-23 November 2017 - Singapore