Created in 1998 by the CCI Paris Ile-de-France, the French Evaluation Test (TEF) is an international benchmark test that measures your level of knowledge and skills in French. The validity of the results is two years.
The TEF is officially recognized by:

the French Ministry of National Education
the Ministry of Higher Education, Research and Innovation
the French Ministry of the Interior
the Department of Immigration, Refugees and Citizenship of Canada
the Ministry of Immigration, Francisation and Integration of Quebec
the Swiss State Secretariat for Migration