This CD-ROM contains PISA 2012 restricted-use data for Connecticut, including variables unique to U.S. data collection. Connecticut is one of three states to participate separately from the nation in 2012. The CD-ROM includes the complete CT data file, a codebook, and a cross-walk to assist in merging with other public datasets, such as the Common Core of Data (CCD) and Private School Survey (PSS). A restricted-use license must be obtained before access to the data is granted. Click on the restricted-use license link below for more details.