The Alliance française is an international organization that aims to promote French language and culture around the world. It is also the most popular school for french language learning. Alliance Francaise can be found in many countries around the world and is one of the few institution that is allowed to give the DELF/DALF, and the TCF exam outside of France.
Please find a sample placement test courtesy of the Alliance Francaise. It has a section for all levels A1 -B2.