Going independently, i.e. not affiliated to a programme, is generally a way to make life difficult for yourself. This expensive initiative often without the guarantee of coming back with an equivalent qualification may seem to promise freedom, but it takes time to plan so make sure you prepare well ahead and are organised and motivated enough to see the process through.
Continuing your studies abroad without any affiliation to a French school or institution can be a difficult process. Plus you’ll have to do your research and complete the administrative formalities a year before leaving and ensure your language proficiency is good enough to get the most out of the experience.
