Table 15A
Mathematics score comparisons, by social class group, Korea and U.S., TIMSS (8th-graders) and PISA (15-year-olds), 1999/2000–2007
| Social class groups | TIMSS 1999 | TIMSS 2007 | Change (scale points) | PISA 2000 | PISA “2007” | Change (scale points) | TIMSS–PISA rough agreement? |
|---|---|---|---|---|---|---|---|
| Korea | |||||||
| Group 1 (Lowest) | 527 | 528 | 1 | 473 | 450 | -23 | No |
| Group 2 | 550 | 548 | -2 | 501 | 502 | 1 | Yes |
| Group 3 | 581 | 584 | 2 | 538 | 532 | -6 | Yes |
| Group 4 | 605 | 613 | 7 | 556 | 554 | -2 | No |
| Group 5/6 (Higher/highest) | 625 | 643 | 18 | 580 | 591 | 11 | No |
| National average | 587 | 597 | 10 | 547 | 547 | 0 | No |
| United States | |||||||
| Group 1 (Lowest) | 439 | 461 | 23 | 416 | 423 | 7 | No |
| Group 2 | 461 | 482 | 22 | 446 | 445 | -1 | No |
| Group 3 | 495 | 515 | 20 | 490 | 479 | -11 | No |
| Group 4 | 523 | 538 | 15 | 510 | 504 | -6 | No |
| Group 5/6 (Higher/highest) | 537 | 546 | 8 | 548 | 535 | -13 | No |
| National average | 502 | 508 | 7 | 493 | 479 | -14 | No |
Note: PISA "2007" is a weighted average of PISA 2006 and PISA 2009 data, where PISA 2006 has twice the weight of PISA 2009.
Source: Trends in International Mathematics and Science Study (TIMSS) as reported in Mullis et al. (2012); OECD Program for International Student Assessment (PISA) (2010a)
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