A history teacher at Jewish school in the southern French city of Marseille was stabbed by three people shouting anti-Semitic obscenities on Wednesday evening, the local police chief said.
The attack on the teacher, who is himself Jewish, took place around 8:00 pm (1900 GMT), police prefect Laurent Nunez said. His life was not in danger, Nunez said, adding that a large number of police were combing the area for the attackers.
The stabbing comes as France is on heightened alert following the Islamist attacks that killed 129 people in Paris at the weekend.
The terror attacks, which were claimed by the Islamic State jihadist group, were the worst in French history.