There are French classes for all levels. The courses are funded by the school, so you won’t pay anything ;).
For those who are interested, you can contact Isabelle Lallemand by sending an email to isabelle.lallemand@telecom-paris.fr before 9 October (for the first semester). For Ph.D. students who will arrive later, the second semester will be between February and June.
If you are not personally interested, please share it with your colleagues who may be in need.