AIR’s NAEP researchers are conducting statistical and psychometric research, evaluation, and data analysis in support of the National Center for Education Statistics (NCES). The goals of the research studies conducted by AIR under this task include (a) developing the psychometric soundness and precision of NAEP assessments, (b) adapting NAEP assessments to changing situations and populations, (c) enhancing understanding of NAEP results, and (d) exploring new ways of modeling NAEP data.