Scale scores by social class group for U.S. and similar post-industrial countries, PISA 2009
| France | Germany | U.K. | U.S. | |
|---|---|---|---|---|
| Reading | ||||
| Group 1 (Lowest) | 403 | 413 | 424 | 442 |
| Group 2 | 458 | 455 | 455 | 471 |
| Group 3 | 498 | 496 | 490 | 504 |
| Group 4 | 533 | 523 | 522 | 529 |
| Group 5 | 559 | 555 | 555 | 563 |
| Group 6 (Highest) | 573 | 551 | 562 | 563 |
| Gap (Group 6 – Group 1) | 170 | 137 | 138 | 121 |
| Gap (Group 5 – Group 2) | 101 | 100 | 100 | 93 |
| Math | ||||
| Group 1 (Lowest) | 413 | 433 | 435 | 434 |
| Group 2 | 460 | 466 | 455 | 464 |
| Group 3 | 498 | 509 | 487 | 491 |
| Group 4 | 529 | 535 | 517 | 510 |
| Group 5 | 562 | 571 | 547 | 548 |
| Group 6 (Highest) | 569 | 570 | 551 | 548 |
| Gap (Group 6 – Group 1) | 156 | 137 | 116 | 114 |
| Gap (Group 5 – Group 2) | 102 | 104 | 92 | 84 |
Source: Authors' analysis of OECD Program for International Student Assessment (PISA) 2009 database for each country