
The TCF is the French language test awarded by the French Ministry of Education:

DELF (Diplôme d'Etudes en Langue Française) and DALF (Diplôme Approfondi de Langue Française) are official qualifications delivered by the French Department of Education to certify competencies of non-French native speakers in the French language.
DELF and DALF qualifications are internationally recognised; they are consistent with the international standards for test development (www.alte.org) and the Common European Framework of reference for Languages (www.coe.int).
DELF and DALF are composed of 6 levels, each independently recognised as a diploma. Candidates can take the examination of their choice, according to their level. They may also sit the examinations for a number of diplomas during the same examination session.
At each level, 4 skills are evaluated :
listening, speaking, reading and writing.
There is a specially adapted version of the DELF diplomas for teenagers called DELF junior.
People who have passed the DALF (C1 or C2) are exempt from taking language tests for entrance into French universities.
A mark of at least 50/100 is required in order to be awarded the diploma.
DELF and DALF are lifetime diplomas.
See the official Levels