American Institutes for Research

The American Institutes for Research (AIR) is a nonprofit, nonpartisan behavioral and social science research, evaluation and technical assistance organization based in Arlington, Virginia. One of the world's largest social science research organizations, AIR has more than 1,800 staff in locations across the United States and abroad.

In 2010 and 2011, ''The Washington Post'' selected AIR as one of the top ten nonprofit firms in the Washington metropolitan area. Provided by Wikipedia