| 01 | Alliance Française | 100.0 |
| 02 | Goethe-Institut | 93.1 |
| 03 | Instituto Cervantes | 80.8 |
| 04 | Japan Foundation | 71.5 |
| 05 | Instituto Camões | 68.3 |
| 06 | Società Dante Alighieri | 67.0 |
| 07 | DELE | 54.6 |
| 08 | King Sejong Institute | 53.1 |
| 09 | PLIDA | 50.5 |
| 10 | HSK | 48.4 |
| 11 | Pushkin Institute of Russian Language | 47.7 |
| 12 | Confucius Institute | 46.7 |
| 13 | Qualité FLE | 31.5 |
| 14 | DALF | 29.0 |
| 15 | DELF/DALF | 29.0 |
| 16 | SIELE | 29.0 |
| 17 | CAPLE | 29.0 |
| 18 | MTC | 29.0 |
| 19 | Taiwan Centers for Mandarin Learning | 29.0 |
| 20 | JLPT | 29.0 |
| 21 | Istituto Italiano di Cultura | 29.0 |
| 22 | Institut français | 29.0 |
| 23 | Goethe-Zertifikat | 23.1 |
| 24 | EF | 22.3 |
| 25 | Middlebury Language Schools | 22.3 |
| 26 | Qasid Arabic Institute | 22.3 |
| 27 | Berlitz | 22.3 |
| 28 | JF Standard for Japanese-Language Education | 20.1 |
| 29 | Busuu | 15.4 |
| 30 | Mondly | 15.0 |