Chart: Comparing U.S. social class changes in PISA and TIMSS, 1999 (2000) to 2007

Table 26

Comparing U.S. social class changes in PISA and TIMSS, 1999 (2000) to 2007

	Percentage of test takers			Percentage of test takers
	PISA			TIMSS
	2000	“2007”	Percentage-point change	1999	2007	Percentage-point change
Group 1 (Lowest)	13%	17%	4	8%	17%	9
Group 2	13	16	3	14	20	6
Group 3	27	28	1	29	28	0
Group 4	20	18	-3	22	17	-5
Group 5/6 (Highest)	26	20	-6	28	18	-10
Disadvantaged (Groups 1 and 2)	27	34	7	22	37	15

Source: Authors' analysis of Trends in International Mathematics and Science Study (TIMSS), 1999 and 2007 databases (Boston College International Study Center) and OECD Program for International Student Assessment (PISA) 2000, 2006, and 2009 databases

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What do international tests really show about U.S. student performance?

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