
AM is a statistical software package for analyzing data from complex samples, especially large-scale assessments.

AM is a statistical software package for analyzing data from complex samples, especially largescale assessments such as the National Assessment of Educational Progress (NAEP) and the Third International Mathematics and Science Studies (TIMSS).



The American Institutes for Research (AIR) is a non-profit organization focused on behavioral and social science research and evaluation, dedicated to improving people's lives through evidence-based solutions. They address critical issues in education, health, workforce development, and international development. With a strong commitment to rigorous research and practical applications, AIR provides insights and resources that policymakers, practitioners, and the public can utilize to foster positive social change.