The Toulouse shootings have brought the French presidential race to a halt.
Both Nicolas Sarkozy and François Hollande have suspended their campaigns.
The incumbent head of state and his wife Carla Bruni joined the Socialist contender in attending a memorial service for those who died.
They gathered with members of the Jewish community at a synagogue in Paris' Marais district.
After the ceremony, thousands of Parisians led by a Jewish groups held a silent march through the east of the city.
A minute of silence will also be held in all French schools later today.
The shootings amount to France's most deadly anti-Semitic violence since August 1982, when a grenade attack on a Jewish restaurant in the French capital killed six people.
Late on Monday, the bodies of the victims were driven to the Ozar Hatorah school where pupils, teachers and parents held a overnight vigil in their memory.
All of the dead had joint Israeli-French citizenship.
Their bodies will be flown to Israel for burial as soon as possible at the request of their families.
Source: Euronews
