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