It has been used since 2001. Before that, every school had its own way to describe the levels of their students. For example:
- beginner, intermediate, advanced
- level 1, level 2, level 3 etc.
As you can imagine, it was not very precise, as level 2 in one school could be very different from level 2 in another.
It was also very hard to compare your level in one language to your level in another.
















