NCES U.S. IALS Restricted-Use Data File
The IALS U.S. 1994 restricted-use file (RUF) with rescaled literacy scores (found here) contains individual unit data including both responses to the background questionnaire and the cognitive assessment from the U.S. IALS data collection, completed in 1994. The file contains rescaled plausible values for literacy and some trend background questionnaire items to allow for trend analysis with the U.S. Program for the International Assessment of Adult Competencies (PIAAC) data. The RUF with rescaled scores can be accessed through a restricted use license agreement with the National Center for Education Statistics.
Stats Canada's International IALS Public-Use Data Files
For analysis with IALS data from other countries, rescaled public-use micro data files from IALS that include the sample from all of the countries that participated in the survey can be obtained from Statistics Canada by sending a request for "rescaled public-use data files for IALS (1994-1998)" to firstname.lastname@example.org. Users will then be signed up to an Electronic File Access (EFT) service where they can download the requested files through the EFT Portal.