| Location | Grade | ||||
| Grade A | Grade B | Grade C | Council of Europe Level B2 | Below Level B2 | |
| Albania | 9.4% | 20.8% | 32.1% | 30.2% | 7.5% |
| Argentina | 10.5% | 22.6% | 46.6% | 19.2% | 1.0% |
| Australia | 5.1% | 12.8% | 44.0% | 33.7% | 4.4% |
| Austria | 19.4% | 27.1% | 38.2% | 13.0% | 2.3% |
| Belarus | 14.9% | 38.3% | 38.3% | 8.5% | 0.0% |
| Belgium | 9.6% | 13.0% | 41.5% | 28.1% | 7.8% |
| Bolivia | 2.0% | 5.9% | 49.0% | 33.3% | 9.8% |
| Bosnia & Herzegovina | 4.5% | 18.2% | 34.1% | 34.8% | 8.3% |
| Brazil | 8.1% | 16.9% | 42.9% | 27.1% | 4.9% |
| Bulgaria | 14.0% | 23.1% | 37.6% | 18.1% | 7.3% |
| Cambodia | 0.0% | 0.0% | 0.0% | 2.8% | 97.2% |
| Canada | 5.9% | 20.6% | 44.4% | 26.5% | 2.6% |
| Chile | 9.2% | 18.8% | 41.8% | 24.8% | 5.4% |
| China | 5.2% | 11.5% | 36.1% | 39.3% | 7.9% |
| Colombia | 12.7% | 14.9% | 32.8% | 29.1% | 10.4% |
| Costa Rica | 9.3% | 14.8% | 37.0% | 31.5% | 7.4% |
| Croatia | 17.9% | 25.9% | 42.7% | 12.7% | 0.9% |
| Cuba | 0.0% | 23.5% | 52.9% | 17.6% | 5.9% |
| Cyprus | 0.0% | 0.0% | 8.3% | 50.0% | 41.7% |
| Czech Republic | 15.1% | 22.2% | 41.2% | 15.8% | 5.7% |
| Denmark | 16.8% | 24.4% | 39.8% | 14.7% | 4.3% |
| Dominican Republic | 0.0% | 20.0% | 60.0% | 0.0% | 20.0% |
| Ecuador | 9.4% | 12.6% | 42.5% | 31.5% | 3.9% |
| Estonia | 31.5% | 26.5% | 28.8% | 11.5% | 1.7% |
| Fiji | 0.0% | 0.0% | 50.0% | 16.7% | 33.3% |
| Finland | 23.2% | 20.0% | 36.8% | 14.7% | 5.3% |
| France | 6.7% | 14.6% | 36.7% | 23.0% | 19.0% |
| Georgia | 5.7% | 11.3% | 34.0% | 27.4% | 21.7% |
| Germany | 11.5% | 19.3% | 38.9% | 18.5% | 11.9% |
| Greece | 5.4% | 11.5% | 37.2% | 25.7% | 20.3% |
| Guadeloupe | 0.0% | 13.0% | 13.0% | 65.2% | 8.7% |
| Guatemala | 60.0% | 0.0% | 20.0% | 20.0% | 0.0% |
| Hong Kong | 3.1% | 12.5% | 56.3% | 21.9% | 6.3% |
| Hungary | 16.8% | 24.9% | 38.2% | 16.7% | 3.4% |
| India | 1.8% | 4.6% | 12.9% | 19.6% | 61.1% |
| Indonesia | 1.9% | 9.7% | 43.7% | 35.0% | 9.7% |
| Iran | 2.9% | 14.3% | 12.9% | 50.0% | 20.0% |
| Ireland | 4.4% | 11.2% | 38.4% | 31.5% | 14.4% |
| Italy | 7.7% | 16.8% | 43.0% | 24.8% | 7.7% |
| Japan | 1.1% | 3.4% | 29.5% | 56.8% | 9.1% |
| Jordan | 5.9% | 11.8% | 41.2% | 35.3% | 5.9% |
| Kazakhstan | 0.0% | 0.0% | 33.3% | 66.7% | 0.0% |
| Korea (South), | 8.3% | 16.7% | 50.0% | 20.8% | 4.2% |
| Latvia | 40.0% | 20.0% | 40.0% | 0.0% | 0.0% |
| Lebanon | 9.8% | 15.0% | 42.1% | 9.8% | 23.3% |
| Lithuania | 15.4% | 23.1% | 34.6% | 19.2% | 7.7% |
| Luxembourg | 8.7% | 17.3% | 20.2% | 9.6% | 44.2% |
| Macedonia | 14.2% | 21.7% | 35.8% | 20.8% | 7.5% |
| Malaysia | 12.7% | 20.4% | 30.9% | 27.5% | 8.5% |
| Maldives | 5.0% | 10.4% | 40.4% | 35.6% | 8.6% |
| Malta | 3.4% | 11.6% | 45.6% | 27.9% | 11.6% |
| Martinique | 0.0% | 0.0% | 36.4% | 54.5% | 9.1% |
| Mexico | 6.6% | 13.5% | 40.6% | 32.4% | 6.9% |
| Moldova | 5.6% | 8.5% | 25.4% | 32.4% | 28.2% |
| Montenegro | 9.5% | 0.0% | 52.4% | 28.6% | 9.5% |
| Morocco | 4.1% | 4.1% | 28.4% | 45.9% | 17.6% |
| Nepal | 1.1% | 1.1% | 12.6% | 41.4% | 43.7% |
| Netherlands | 14.8% | 27.9% | 46.2% | 10.7% | 0.5% |
| New Caledonia | 0.0% | 10.0% | 70.0% | 20.0% | 0.0% |
| New Zealand | 9.1% | 20.7% | 47.6% | 20.7% | 1.8% |
| Nigeria | 0.0% | 15.6% | 25.0% | 43.8% | 15.6% |
| Pakistan | 8.3% | 30.0% | 34.3% | 18.8% | 8.6% |
| Panama | 10.0% | 0.0% | 10.0% | 50.0% | 30.0% |
| Paraguay | 3.3% | 13.3% | 60.0% | 20.0% | 3.3% |
| Peru | 6.0% | 14.0% | 38.4% | 35.4% | 6.2% |
| Philippines | 8.3% | 9.7% | 23.6% | 43.1% | 15.3% |
| Poland | 10.1% | 21.6% | 41.4% | 15.8% | 11.1% |
| Portugal | 10.6% | 21.9% | 38.6% | 12.9% | 16.0% |
| Romania | 16.4% | 23.2% | 37.1% | 16.1% | 7.2% |
| Russia | 11.4% | 16.5% | 37.5% | 21.2% | 13.4% |
| Senegal | 0.0% | 8.3% | 20.8% | 45.8% | 25.0% |
| Serbia | 13.5% | 19.9% | 32.9% | 11.3% | 22.3% |
| Singapore | 9.1% | 22.7% | 54.5% | 9.1% | 4.5% |
| Slovakia | 9.0% | 13.2% | 33.1% | 17.8% | 27.0% |
| Slovenia | 11.4% | 21.7% | 42.8% | 15.1% | 9.0% |
| South Africa | 22.8% | 20.0% | 30.2% | 16.8% | 10.2% |
| Spain | 3.7% | 11.3% | 46.1% | 30.5% | 8.5% |
| Sri Lanka | 5.2% | 5.2% | 25.0% | 37.1% | 27.6% |
| Sweden | 19.5% | 24.5% | 37.2% | 16.5% | 2.3% |
| Switzerland | 8.1% | 15.2% | 39.7% | 25.1% | 12.0% |
| Taiwan | 0.0% | 8.3% | 75.0% | 8.3% | 8.3% |
| Thailand | 7.7% | 17.9% | 41.0% | 30.8% | 2.6% |
| Tunisia | 6.1% | 6.1% | 60.6% | 27.3% | 0.0% |
| Turkey | 0.8% | 4.9% | 11.5% | 11.5% | 71.3% |
| Ukraine | 9.0% | 14.1% | 34.3% | 32.5% | 10.1% |
| United Arab Emirates | 4.5% | 14.9% | 35.8% | 32.8% | 11.9% |
| United Kingdom | 5.7% | 13.1% | 41.1% | 29.4% | 10.8% |
| United States of America | 4.5% | 11.9% | 49.1% | 29.9% | 4.6% |
| Uruguay | 7.2% | 15.0% | 49.4% | 27.7% | 0.7% |
| Vietnam | 6.7% | 21.8% | 25.2% | 31.1% | 15.1% |
| Grand Total | 8.5% | 16.7% | 41.9% | 24.0% | 9.0% |