DELF (Diplôme d’études en langue française) is the test that will concern most French learners, as it tests levels from A1 through B2, covering beginner and intermediate learners.
The DELF is one of the most useful diplomas to have, particularly when applying to French jobs or for French university degrees. Most undergraduate and graduate programs require a B2 diploma, though some undergraduate programs accept B1. B1 and B2 are also the levels that most French workplaces require if your job is going to include a moderate amount of French.
The DELF category of tests are four different exams such as; reading, writing, listening and speaking. Each of these sections are evaluated separately and the results are added up. The total of final points indicates your level of French language. The evaluation varies from A1 to B2.