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About - History

In the early 1990s, NCES created the International Activities Program (IAP) to conduct the International Adult Literacy Survey (IALS) and the Third International Mathematics and Science Study (TIMSS), which is now known as the Trends in International Mathematics and Science Study (TIMSS).

U.S. Participation in International Studies

Year Study
IALS TIMSS CivEd PISA PIRLS ALL TALIS PIAAC ICILS IELS
1994                  
1995                  
1996                    
1997                    
1998                    
1999                
2000                  
2001                  
2002                    
2003              
2004                    
2005                    
2006                
2007                  
2008                  
2009                  
2010                    
2011                
2012                
2013                
2014                  
2015                
2016                  
2017                  
2018            
2019                  
2020                    
■ = United States participated
□ = United States did not participate, but study was conducted internationally
▲ = United States conducted an additional round of data collection between international cycles.