Methodology and Technical Notes

This section describes features of the Program for International Student Assessment (PISA) 2015 methodology, including sample design, test design, and scoring, with a particular focus on the U.S. implementation. For further details about the assessment and any of the topics discussed here, see the Organization for Economic Cooperation and Development's (OECD) PISA 2015 Technical Report (forthcoming).

• International Requirements
• Sampling and Data Collection in the United States
• Test Development
• Weighting
• Scaling of Data
• Proficiency Levels
• Data Limitations
• Confidentiality and Disclosure Limitations
• Statistical Procedures

International and U.S. Response Rates

• Response Rates
• U.S. Nonresponse Bias Analysis