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Participating Countries

Education system 1995 1999 2003 2007 2011 2015 2019
4th grade 8th grade 8th grade 4th grade 8th grade 4th grade 8th grade 4th grade 8th grade 4th grade 8th grade 4th grade 8th grade
Albania                        
Algeria                      
Argentina                      
Armenia        
Australia
Austria                
Azerbaijan                      
Bahrain          
Belgium (Flemish)-BEL            
Belgium (French)-BEL                        
Bosnia and Herzegovina                      
Botswana1                
Bulgaria              
Canada              
Chile          
Chinese Taipei    
Colombia                    
Croatia                    
Cyprus        
Czech Republic          
Denmark                
Egypt                  
El Salvador                      
England-GBR
Estonia                        
Finland              
France                  
Georgia          
Germany                
Ghana                    
Greece                      
Honduras2                      
Hong Kong-CHN
Hungary
Iceland                      
Indonesia            
Iran, Islamic Republic of
Ireland            
Israel          
Italy
Japan
Jordan            
Kazakhstan            
Korea, Republic of    
Kosovo                        
Kuwait        
Latvia            
Lebanon                
Lithuania  
Malaysia              
Malta                  
Mexico                      
Moldova, Republic of                    
Mongolia                      
Montenegro                        
Morocco    
Netherlands        
New Zealand  
North Macedonia                  
Northern Ireland-GBR                    
Norway3  
Oman            
Pakistan                        
Palestinian Nat'l Auth.                    
Philippines                
Poland                    
Portugal              
Qatar          
Romania            
Russian Federation  
Saudi Arabia          
Scotland-GBR              
Serbia                
Singapore
Slovak Republic            
Slovenia    
South Africa4          
Spain                  
Sweden      
Switzerland                        
Syrian Arab Republic                      
Thailand            
Tunisia            
Turkey5          
Ukraine                    
United Arab Emirates              
United States
Yemen6                    
    Total 29 46 38 26 47 37 50 50 42 49 38 58 39
U.S. benchmarking states
Alabama-USA                        
California-USA                        
Colorado-USA                      
Connecticut-USA                      
Florida-USA                  
Idaho-USA                        
Illinois-USA                      
Indiana-USA                  
Maryland-USA                        
Massachusetts-USA                  
Michigan-USA                        
Minnesota-USA                
Missouri-USA7                      
North Carolina-USA                    
Oregon-USA7                      
Pennsylvania-USA                        
South Carolina-USA                        
Texas-USA                        
    Total 2 4 13 1 1 2 2 2 9 1 1 0 0
Other benchmarking participants
Abu Dhabi-UAE              
Alberta-CAN              
Basque Country-ESP                      
British Columbia-CAN                    
Buenos Aires-ARG                      
Dubai-UAE          
Gauteng-ZAF8                        
Madrid-ESP                        
Moscow City-RUS                      
Ontario-CAN
Quebec-CAN
Western Cape-ZAF8                        
    Total 3 3 4 2 3 5 5 5 5 5 5 6 7

= Indicates participation in particular assessment with results reported or forthcoming.

○ = Indicates participation in particular assessment but results either not reported or reported separately, typically due to sampling, response rates, or other procedural problems with the data.

1 Botswana assessed 6th-grade students in 2011 and 9th-grade students in 2011 and 2015.

2 Honduras assessed 6th-grade students and 9th-grade students in 2011.

3 Starting in TIMSS 2015, Norway chose to assess students in the 5th and 9th years of schooling, so students would be compared with similar age students in Sweden, Denmark, and Finland. To maintain trend with previous TIMSS cycles, in 2015 Norway also collected data from students in their 4th and 8th years of schooling.

4 South Africa assessed 5th-grade students since 2015 and 9th-grade students since 2011 to better match their curricula and to maintain trend measurement.

5 Starting in 2019, Turkey chose to assess students in the 5th-grade.

6 Yemen assessed both 4th-grade and 6th-grade students in 2011.

7 Missouri-USA and Oregon-USA participated in the 1997 TIMSS Benchmarking Study, which administered the TIMSS 1995 assessment to 8th-grade students in 1997.

8 South Africa's benchmarking systems, Gauteng and Western Cape, assessed 9th-grade students in 2019 to better match their curricula and to maintain trend measurement.

NOTE: OECD member countries are bolded. Subnational education systems are italicized.

SOURCE: International Association for the Evaluation of Educational Achievement (IEA), Trends in International Mathematics and Science Study (TIMSS).

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