Restricted-Use Data Supplement to the User's Guide for the Program for International Student Assessment (PISA): 2006 Data Files and Database with United States Specific Variables
The User's Guide for the PISA 2006 restricted-use data for the United States is a supplement to the PISA 2006 public-use data technical manual. This supplement describes the variables in the restricted-use datafile and how to merge them with the public-use datafile so they may be used.
