The National Center for Education Statistics (NCES) initiated this special study in an effort to link the National Assessment of Educational Progress (NAEP) scale to the Trends in International Mathematics and Science Study (TIMSS) scale so that states could compare the performance of their students with that of students in other countries.
The NAEP assessment schedule was modified so that eighth-graders in all 50 states, the District of Columbia, and the Department of Defense schools (referred to as "states" or U.S. states) could be assessed in mathematics and science in 2011.
The NAEP-TIMSS linking study used states' NAEP scores to predict performance on TIMSS. Nine states participated in the 2011 TIMSS at the state level. In the linking study, the actual TIMSS scores from those states were used to validate their predicted results.Compare State Assessments to International Education Assessments
The 2011 NAEP-TIMSS linking study enabled NCES to evaluate multiple linking methodologies. See a brief description of the linking study samples and methodologies employed, exclusion rates, and learn more about TIMSS at the NCES.