| Answer | Mean | Mathematics | Reading | Science | % Correct |
|---|---|---|---|---|---|
| Japan | 530 | 527 | 516 | 547 | 100%
|
| South Korea | 518 | 510 | 515 | 528 | 100%
|
| Finland | 495 | 484 | 490 | 511 | 92%
|
| Canada | 505 | 493 | 507 | 515 | 88%
|
| Denmark | 491 | 489 | 489 | 494 | 88%
|
| Sweden | 488 | 482 | 487 | 494 | 88%
|
| United States | 489 | 465 | 504 | 499 | 88%
|
| United Kingdom | 494 | 489 | 494 | 500 | 84%
|
| Singapore | 560 | 575 | 534 | 461 | 80%
|
| Switzerland | 494 | 497 | 483 | 503 | 80%
|
| Taiwan | 531 | 540 | 515 | 537 | 80%
|
| Australia | 497 | 487 | 498 | 507 | 76%
|
| Belgium | 486 | 489 | 479 | 491 | 76%
|
| Ireland | 503 | 489 | 516 | 504 | 72%
|
| Estonia | 515 | 508 | 511 | 526 | 64%
|
| New Zealand | 495 | 479 | 501 | 504 | 64%
|
| Poland | 495 | 498 | 489 | 499 | 52%
|
| Czechia | 491 | 487 | 489 | 498 | 36%
|