Table 5
Scale scores by social class group for U.S. and top-scoring countries, PISA 2009
| Canada | Finland | Korea | U.S. | |
|---|---|---|---|---|
| Reading | ||||
| Group 1 (Lowest) | 459 | 466 | 461 | 442 |
| Group 2 | 492 | 495 | 501 | 471 |
| Group 3 | 518 | 523 | 529 | 504 |
| Group 4 | 543 | 552 | 546 | 529 |
| Group 5 | 561 | 571 | 564 | 563 |
| Group 6 (Highest) | 567 | 572 | 581 | 563 |
| Gap (Group 6 – Group 1) | 108 | 106 | 119 | 121 |
| Gap (Group 5 – Group 2) | 70 | 75 | 63 | 93 |
| Math | ||||
| Group 1 (Lowest) | 471 | 490 | 452 | 434 |
| Group 2 | 493 | 507 | 504 | 464 |
| Group 3 | 521 | 528 | 531 | 491 |
| Group 4 | 543 | 552 | 553 | 510 |
| Group 5 | 560 | 570 | 579 | 548 |
| Group 6 (Highest) | 567 | 580 | 602 | 548 |
| Gap (Group 6 – Group 1) | 96 | 90 | 149 | 114 |
| Gap (Group 5 – Group 2) | 67 | 63 | 75 | 84 |
Source: Authors' analysis of OECD Program for International Student Assessment (PISA) 2009 database for each country
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