Why the Health insurance is mandatory ? > Inde

France's system of social protection is one of the world's best. The system covers all or part of the health-care costs of insured parties. Students under the age of 28 are covered by social security when they register with an approved educational institution.

But the procedure for the students above 28 yrs to obtain the social security+insurance is a little different from the procedure for students under the age of 28 yrs, please see follow this link http://www.inde.campusfrance.org/en/news/french-health-insurance-social-security-france.