Are you planning to stay in France after your studies to look for a job or set up a business?
You must register with the CPAM (French social security). This registration is compulsory in order to apply for the residence permit that will allow you to pursue your projects in France.
You must register as soon as you arrive in France and you can do so as long as you have a valid school certificate.
You will find flyers explaining the process in front of office 147 in building 1. You can also ask Jessica at firstname.lastname@example.org.
NB: You cannot register before you arrive in France.