The following table shows the relationship between YESSI levels and those of the Council of Europe and the University of Cambridge.This is our aim at YESSI: we want all of our students to have their level certified by an officially recognised wordwide organisation.
| YESSI LEVEL | COUNCIL OF EUROPE | CAMBRIDGE |
| 1. Beginner | A1 | |
| 2. Elementary | ||
| 3. Pre-Intermediate | A2 | |
| 4. Intermediate | ||
| 5. Upper-Intermediate | B1 | |
| 6. First Certificate I | ||
| 7. First Certificate II | B2 |
FCE |
| 8. Advanced I | ||
| 9. Advanced II | C1 |
CAE |
| 10. Proficiency I | ||
| 11. Proficiency II | C2 |
PROFICIENCY |