French schools are to hold three security drills a year, including one in which an alleged assailant enters their premises.
France's education minister Najat Vallaud-Belkacem and interior minister Bernard Cazeneuve has announced a series of measures to improve how French schools and children handle terror threats.
Students will be taught how to hide or to escape, depending on the situation and where they are.
All students aged 13 to 14 and class representatives will also receive basic training on life-saving measures. Ms Vallaud-Belkacem said, as of now, only 30% of students are trained.
For children aged two to six, no mention of an attack or danger should be made but children must be taught to hide and keep quiet through games, Ms Vallaud-Belkacem said.
"It's not a question of succumbing to panic or into paranoia, but simply to face our responsibilities," she said, noting Islamic radical Mohamed Merah's attack on a Jewish school in 2012 in the south-western city of Toulouse.
Mr Cazeneuve said the plan aims at "preventing the risk of an attack and at the same time guaranteeing a serene atmosphere in schools".
Other security measures are already in place since last year's deadly attacks in Paris. Some police forces patrol in school areas and parents and students are requested to avoid gathering near schools and systematically report any suspicious behaviour or object.
School principals will hold meetings with parents to detail the security measures at the beginning of the school year in September.
The government has also decided to provide e50m to local councils - in charge of the school buildings - to help them pay for security equipment such as video door phones and new alarm systems.