International Adult Literacy Survey (IALS)
Other reference periods
- 2022 Programme for the International Assessment of Adult Competencies (PIAAC)
- 2012 Programme for the International Assessment of Adult Competencies (PIAAC)
- 2010 (pilot survey) Programme for the International Assessment of Adult Competencies (PIAAC)
- 2003 International Adult Literacy and Skills Survey (IALSS)
- 1994 International Adult Literacy Survey (IALS)
Generally, information is only available for reference periods after November 2000.
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