Key facts
- Attackers doused a headteacher in petrol and set fires in at least two schools on Thursday.
- A fire truck was set alight by protesters at Marseille's Saint-Exupery high school.
- Dozens of people have been injured and hundreds arrested during the protests.
- Protests are against staff shortages and dilapidated school buildings.
- Education Minister Edouard Geffray suggested remote classes for schools with blocked premises.
Protests against staff shortages and dilapidated school buildings escalated across France on Thursday, with attackers dousing a headteacher in petrol and setting fire to a fire truck and at least two schools. The demonstrations, which began last week, have become a political flashpoint for the government.