http://nces.ed.gov/pubs/ce/c9623d01.html
The Condition of Education 1996, Supplemental Table 23-1
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Average proficiency score Percentile scores
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Country Total Male Female 1st 5th 10th Median 90th 95th 99th
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Comprehensive populations
Canada\1\ 430 430 431 296 337 363 435 490 506 537
Hungary 452 452 452 312 357 379 455 520 536 573
Ireland 426 425 427 273 317 345 433 493 514 545
Israel\2\ 442 447 438 310 347 373 445 504 523 555
South Korea 473 480 465 334 383 407 475 534 550 586
Slovenia 413 413 414 303 336 355 417 467 482 508
Soviet Union\3\ 447 448 446 310 349 374 450 514 532 579
Spain\4\ 432 432 432 287 330 353 437 499 518 551
Taiwan 454 455 453 304 360 384 457 521 539 571
United States\5\ 420 422 419 278 305 333 427 492 513 549
Populations with exclusions or low participation
England\6\ 427 427 427 292 322 352 428 501 521 556
Italy, Emilia-Romagna\6\ 451 456 446 315 360 386 453 518 536 570
Portugal\7\ 418 422 414 284 327 347 422 485 500 530
Scotland\6\ 446 446 446 314 356 382 447 511 525 559
Canadian populations
British Columbia 434 433 434 291 336 365 437 497 512 548
New Brunswick-English 427 429 426 288 326 353 433 489 505 540
Ontario-English 420 417 421 286 321 351 425 482 497 527
Ontario-French 414 415 414 292 333 353 419 470 482 512
Quebec-English 435 437 434 294 334 365 440 499 518 549
Quebec-French 443 444 441 318 356 380 447 497 513 540
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1\ Four out of 10 provinces.
2\ Hebrew-speaking schools.
3\ Fourteen out of 15 republics in the former Soviet Union; Russian-speaking schools.
4\ Regions except Catalu�a; Spanish-speaking schools.
5\ Combined school and student participation rate is below .80 but at least .70; interpret results with caution because of possible nonresponse bias.
6\ Combined school and student participation rate is below .70; interpret results with extreme caution because of possible nonresponse bias.
7\ Restricted grades.
SOURCE: Educational Testing Service, International Assessment of Educational Progress, 1992.
