The DELF and DALF are official French language proficiency qualifications administered and awarded by the French Ministry of Education. They are valid for life and recognised internationally.
Detailed Description
A DELF certification will help you to:
Get an official statement of your French level, which can be used for French nationality applications (B1 minimum required) and many other purposes
Study at university in France and in other French-speaking countries
Advance your career with an official qualification on your CV
Prove how much your French has improved
Challenge yourself and revise what you know
More Information: https://www.sheffield.ac.uk/mltc/home/delf-french-qualification