I am interested in factor analysis results of the PISA questionnaire items. In the technical report it is said that CFA and IRT used for validity and item fit. I am planning to use PISA dataset for a project and it will be so helpful if I can find the CFA results for polytomous items especially.
The predictive validity of the PISA test is discussed in the report on the Canadian longitudinal study based on PISA 2000.
This report demonstrates that higher performance on the PISA test is highly associated with better educational outcomes later in student life. The OECD is currently carrying out a project to see what the predictive validity of PISA test items is. Other validity and reliability measures are discussed at length in the PISA technical reports.