那是因為美國人普遍數學不好的關西吧

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PISA-OECD

Maths

1 China Shanghai, China 613
2 Singapore 573
3 Hong Kong, China 561
4 Taiwan 560
5 South Korea 554
6 Macau, China 538
7 Japan 536
8 Liechtenstein 535
9 Switzerland 531
10 Netherlands 523
11 Estonia 521
12 Finland 519
13= Canada 518
13= Poland 518
15 Belgium 515
16 Germany 514
17 Vietnam 511
18 Austria 506
19 Australia 504
20= Ireland 501
20= Slovenia 501
22= Denmark 500
22= New Zealand 500
24 Czech Republic 499
25 France 495
26 United Kingdom 494
27 Iceland 493
28 Latvia 491
29 Luxembourg 490
.....

找不到美國?

太後面了對不起...

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難道是第30名?

對不起....第30名也不是美國