Riot police have clashed with protesters as thousands of students demonstrating over education standards disrupted more than 560 schools in France on Friday.
Fires have burned in the streets as high school pupils and others objected to a lack of teachers, overcrowded classrooms and run‑down buildings.
The protests began last week in Paris and have spread across the country, with cities including Montpellier, Nantes and Marseille affected.
French justice minister Gerald Darmanin said things had "gone from high‑school student demonstrations to a public order disturbance".
Escalating violence and damage
On Friday, a 17‑year‑old was arrested on suspicion of attempted homicide after protests in Belfort, north‑eastern France, where a police officer was targeted.
At least 65 staff members have been injured in the unrest, the education ministry said.
In the Paris suburb of Pantin police charged at protesters and made arrests after projectiles were thrown at officers.
Meanwhile, in Strasbourg tear gas was deployed as police feared conditions would become more hostile.
Rubbish bins have also been set on fire in Rennes and Paris.
"As far as we're concerned, we've won – our school is closed this morning," a 16‑year‑old protester told the AFP news agency.
She said police actions had made things worse.
"It makes us even angrier – the police have no right to hit us or use tear gas on us," she added.
In Marseille, fireworks were thrown at police and teachers were also inadvertently splashed with petrol at a school, officials said.
"Significant damage" had been done to school facilities, the education ministry said.
The Nelson Mandela high school in Nantes had suffered more than €2m (£1.7m) damage, according to the regional government.
Union support and government response
Many French unions have given their support to the protesting students.
Education union SNEP‑FSU, public services union SNUEP‑FSU and Solidaires have all called for members to support them.
Solidaires Trade Union Federation said in a statement: "Let's not let them fire on our children. Secondary school pupils have the freedom of assembly, association and demonstration."
