| Location | Grade | ||||
| Grade A | Grade B | Grade C | Council of Europe Level C1 | Fail | |
| Albania | 14.3% | 0.0% | 14.3% | 57.1% | 14.3% |
| Argentina | 4.7% | 13.2% | 23.3% | 13.5% | 45.3% |
| Australia | 12.4% | 16.2% | 34.6% | 13.0% | 23.8% |
| Austria | 25.0% | 22.1% | 19.1% | 18.4% | 15.4% |
| Belarus | 0.0% | 40.0% | 30.0% | 20.0% | 10.0% |
| Belgium | 18.8% | 11.6% | 17.4% | 11.6% | 40.6% |
| Bosnia & Herzegovina | 4.3% | 12.8% | 34.0% | 31.9% | 17.0% |
| Brazil | 6.1% | 14.8% | 28.3% | 25.8% | 25.0% |
| Bulgaria | 15.1% | 20.3% | 29.8% | 18.9% | 15.9% |
| Canada | 17.8% | 9.6% | 37.0% | 9.6% | 26.0% |
| Chile | 3.2% | 12.7% | 22.2% | 28.6% | 33.3% |
| China | 0.0% | 0.0% | 10.5% | 36.8% | 52.6% |
| Colombia | 7.1% | 28.6% | 32.1% | 17.9% | 14.3% |
| Costa Rica | 0.0% | 0.0% | 40.0% | 40.0% | 20.0% |
| Croatia | 10.3% | 21.4% | 42.7% | 20.5% | 5.1% |
| Cyprus | 21.4% | 7.1% | 7.1% | 14.3% | 50.0% |
| Czech Republic | 20.1% | 17.9% | 26.0% | 13.6% | 22.3% |
| Denmark | 21.1% | 21.1% | 28.9% | 21.1% | 7.9% |
| Estonia | 31.3% | 12.5% | 25.0% | 0.0% | 31.3% |
| Finland | 10.3% | 13.8% | 13.8% | 17.2% | 44.8% |
| France | 7.5% | 16.4% | 25.9% | 17.2% | 33.1% |
| Germany | 16.6% | 17.8% | 22.0% | 16.4% | 27.3% |
| Greece | 2.8% | 9.9% | 35.5% | 37.8% | 14.0% |
| Hong Kong | 5.0% | 10.0% | 35.0% | 30.0% | 20.0% |
| Hungary | 15.0% | 17.0% | 26.0% | 19.0% | 23.0% |
| India | 0.0% | 50.0% | 50.0% | 0.0% | 0.0% |
| Iran | 0.0% | 0.0% | 25.0% | 50.0% | 25.0% |
| Ireland | 7.7% | 16.9% | 23.1% | 20.8% | 31.5% |
| Italy | 10.1% | 16.4% | 32.5% | 22.4% | 18.6% |
| Japan | 0.0% | 5.9% | 11.8% | 64.7% | 17.6% |
| Korea (South), | 0.0% | 33.3% | 33.3% | 0.0% | 33.3% |
| Macedonia | 21.1% | 15.8% | 15.8% | 21.1% | 26.3% |
| Malaysia | 12.3% | 29.8% | 28.1% | 17.5% | 12.3% |
| Maldives | 6.2% | 15.5% | 35.4% | 31.1% | 11.8% |
| Malta | 15.6% | 9.4% | 18.8% | 18.8% | 37.5% |
| Mexico | 6.6% | 12.0% | 27.1% | 25.4% | 29.0% |
| Netherlands | 11.4% | 21.4% | 33.0% | 14.4% | 19.8% |
| New Zealand | 17.9% | 16.1% | 32.1% | 5.4% | 28.6% |
| Paraguay | 0.0% | 5.3% | 31.6% | 26.3% | 36.8% |
| Peru | 4.1% | 13.4% | 26.7% | 33.1% | 22.7% |
| Poland | 15.6% | 21.7% | 29.8% | 16.7% | 16.2% |
| Portugal | 8.3% | 18.9% | 34.3% | 19.3% | 19.3% |
| Romania | 22.3% | 24.3% | 25.7% | 9.6% | 18.2% |
| Russia | 15.3% | 15.3% | 28.2% | 15.6% | 25.5% |
| Serbia | 15.9% | 18.6% | 23.6% | 14.3% | 27.6% |
| Singapore | 13.3% | 6.7% | 20.0% | 26.7% | 33.3% |
| Slovakia | 2.6% | 15.8% | 36.8% | 15.8% | 28.9% |
| Slovenia | 23.2% | 21.4% | 25.0% | 8.9% | 21.4% |
| South Africa | 17.4% | 26.1% | 4.3% | 8.7% | 43.5% |
| Spain | 6.0% | 15.3% | 36.7% | 28.1% | 13.8% |
| Sri Lanka | 11.1% | 11.1% | 11.1% | 22.2% | 44.4% |
| Sweden | 19.8% | 17.5% | 34.1% | 12.7% | 15.9% |
| Switzerland | 15.5% | 20.4% | 32.6% | 20.2% | 11.3% |
| Taiwan | 0.0% | 0.0% | 0.0% | 66.7% | 33.3% |
| Thailand | 6.7% | 20.0% | 13.3% | 33.3% | 26.7% |
| Turkey | 0.0% | 25.0% | 0.0% | 75.0% | 0.0% |
| Ukraine | 9.3% | 23.3% | 16.3% | 39.5% | 11.6% |
| United Kingdom | 12.3% | 19.0% | 28.3% | 21.6% | 18.8% |
| United States of America | 10.0% | 21.7% | 36.7% | 11.7% | 20.0% |
| Uruguay | 3.4% | 12.9% | 38.3% | 31.9% | 13.6% |
| Grand Total | 8.8% | 16.2% | 32.2% | 23.7% | 19.1% |