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Table C.1.03. IEA: Percentage distribution and average achievement scores of fourth-grade students in reading and language instruction as reported in PIRLS, by class size and country: 2006

  1-20 students   21-30 students   31 or more students    
  2006 percent of students   Average achievement   Difference in percent from 2001   2006 percent of students   Average achievement   Difference in percent from 2001   2006 percent of students   Average achievement   Difference in percent from 2001  
Countries Percent   s.e.   Score s.e.   Percent   s.e.     Percent s.e.   Score s.e.   Percent   s.e.   Percent   s.e.   Score s.e.   Percent   s.e.  
International average 32   0.5   489 1.6         51 0.5   504 0.9       17   0.3   486 1.7      
                                                                   
Luxembourg 92   0.1   557 1.2         6 0.1   554 2.8       1   #        
Romania 57   3.3   474 6.7   23   4.3   41 3.4   508 7.0   -13 ! 5.0       -9 ! 3.0
Bulgaria 59   4.0   541 5.5   22   5.1   41 4.0   556 6.7   -21   5.2 #          
Slovenia 57   3.4   519 2.5   14 ! 5.1   42 3.4   525 3.1   -16 ! 5.1          
Italy 53   3.8   548 4.0         47 3.8   555 3.7       #       #    
                                                                   
Norway 56   4.4   496 4.1         42 4.1   500 3.3                
Lithuania 40   3.0   526 2.7         60 3.0   545 2.0       #          
Denmark 51   3.9   541 3.4         49 4.0   553 3.5       #          
Latvia 51   3.0   531 3.6   19   4.4   45 3.0   550 2.8   -13 ! 4.9 4 ! 1.5   564 11.8   -7 ! 3.0
Iceland 48   0.4   509 1.9   -2   0.5   49 0.4   511 1.8       3   0.1   504 10.6   3   0.1
                                                                   
Belgium (Flemish) 47   3.9   546 2.7         52 3.9   548 2.6       #          
Austria 42   3.5   542 3.2         58 3.5   536 2.8       #          
Belgium (French) 39   3.8   496 5.5         59 3.7   502 3.3                
Georgia 51   3.1   467 4.9         29 3.3   464 4.1       20   2.9   489 6.2      
Poland 38   3.6   512 3.9         60 3.7   524 3.2       2 ! 0.8        
                                                                   
Trinidad and Tobago 41   3.1   407 9.8         53 3.4   456 6.0       7   2.0   485 14.4      
Germany 33   2.8   541 4.1         67 2.8   553 2.5       #       -2 ! 0.9
Hungary 38   3.6   529 5.6   12 ! 4.8   58 3.8   563 3.5       4 ! 1.7   568 5.7      
Russian Federation 35   2.3   542 4.9         62 2.5   577 4.0                
Moldova, Rep. of 35   3.5   495 5.9   13 ! 5.3   55 3.8   499 4.2       10   2.4   513 8.3      
                                                                   
Slovak Republic 34   2.9   520 5.4         59 3.3   534 3.6       7   1.8   553 3.9      
Spain 32   3.6   498 6.2         68 3.6   519 2.8       #          
United States 26   3.4   535 6.4         68 3.7   541 3.9       5 ! 1.6   540 10.7      
Sweden 33   3.5   542 3.8         61 4.1   553 2.9       6 ! 2.3   545 8.5      
Canada, Alberta 24   2.5   558 4.2         74 2.7   561 3.0       3 ! 1.2   542 22.9      
                                                                   
Canada, Nova Scotia 19   2.3   536 6.1         79 2.5   544 2.5       2 ! 0.9        
France 14   1.9   505 4.8         85 2.2   524 2.6             #    
Netherlands 18   3.3   527 4.1         71 3.8   551 2.0       11   2.6   551 5.1   -10 ! 4.9
Macedonia, Rep. of 24   3.3   430 10.6   9 ! 4.3   58 4.0   454 7.4   #     17   3.0   427 14.8      
Kuwait 5 ! 1.8   315 23.7         91 2.5   331 4.4       4 ! 1.8   345 15.5      
                                                                   
Iran, Islamic Rep. of 28   2.8   401 6.8         44 3.7   422 5.3       28   3.4   439 7.9      
Canada, Quebec 7   1.7   528 9.1         91 2.1   535 3.1             #    
Canada, British Columbia1 10   2.4   570 6.9         83 3.2   558 3.3       7 ! 2.3   556 11.8      
Canada, Ontario 6 ! 1.9   539 6.1         85 3.4   554 3.2       9 ! 3.1   563 7.2      
Scotland 11   2.6   525 10.7   #       71 4.3   528 3.3   #     18   3.8   524 7.2   #    
                                                                   
Qatar2 12   0.2   352 5.3         68 0.3   354 1.5       20   0.2   344 3.1      
New Zealand 10   1.2   508 8.4         71 2.5   535 2.6       19   2.4   539 4.4      
England 8   1.6   566 17.1         71 3.8   536 3.7   23   5.8 21   3.5   548 6.3   -22   5.8
Israel 6 ! 1.9   497 23.2         49 4.1   527 6.4       45   4.0   499 8.3      
Morocco 15   2.8   318 15.8         35 3.9   338 10.5       50   3.8   318 7.7      
                                                                   
Indonesia 19   2.3   391 8.1         32 3.8   408 7.2       49   3.7   408 6.3      
Chinese Taipei 3   0.7   504 6.8         22 2.9   530 4.6       75   2.8   539 2.4      
Hong Kong SAR3 1   0.6           18 3.3   544 6.1       81   3.3   568 2.6      
Singapore 3 ! 0.9   583 11.0             -5 ! 1.6 96   1.1   558 3.0      
South Africa 3   0.8   244 31.8         16 2.4   355 21.7       81   2.4   292 6.3      
— Not available. Country did not participate in the 2001 assessment.
† Not applicable.
# Rounds to zero.
! Interpret data with caution, estimates are unstable. The coefficient of variation is greater than or equal to .3 but less than .5.
‡ Reporting standards not met. Either data are insufficient to report achievement or the coefficient of variation is greater than or equal to .5.
∆ 2006 significantly higher.
▼2006 significantly lower.
1 Data are available for at least 70 but less than 85 percent of the students.
2 Data are available for at least 50 but less than 70 percent of the students.
3 Hong Kong is a Special Administrative Region (SAR) of the People's Republic of China.
NOTE: The international average does not include the Canadian provinces. The primary education systems of the Russian Federation and Slovenia underwent structural changes. Data for Canada, Ontario include only public schools. Details may not sum to totals due to rounding. Standard error is noted by s.e. Differences are significant at the p<0.05 level.
SOURCE: Data from the International Association for the Evaluation of Educational Achievement (IEA), Progress in International Reading Literacy Study (PIRLS), 2006. Mullis, I.V.S., Martin, M.O., Kennedy, A.M., and Foy, P. (2007). PIRLS 2006 International Report, exhibit 5.16. Chestnut Hill, MA: Boston College.
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National Center for Education Statistics - http://nces.ed.gov
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