The violence came amid nationwide protests in France over classroom conditions that have disrupted lessons at hundreds of schools since last week.
Some students returned to classrooms but others maintained protests outside their schools, ahead of larger demonstrations expected on Tuesday in what a secondary school students' union has dubbed "Act III" of the movement.
Authorities said the teenager was injured in the northern town of Lens. A police union source said he appeared to have picked up a sting-ball grenade fired by riot police and that it exploded in his hand.
Since late September, students have blocked the entrances to hundreds of schools, complaining of teacher absences, overloaded timetables, dilapidated classrooms and buildings ill-adapted to rising temperatures, among other grievances.
"It's clear the education system isn't working," Alma, a pupil at the Lycee Charlemagne in central Paris, told AFP. A protester holds a firework stick during protests in the soutwestern town of Bordeaux
The unrest ignited just months before 2027 elections that will determine the successor to centrist President Emmanuel Macron.
The government has sought to address the grievances, while accusing hard-left activists of having hijacked the protest movement.
"They think that just because they're letting us express ourselves on a platform, on the internet, we'll stop blocking access and being angry, but this anger has been here for years," said Simon, a pupil also at the Lycee Charlemagne.
Hundreds of French schools closed as students maintain protest pressure
The French Human Rights League (LDH) on Monday accused security forces of using disproportionate methods against protesters, many of whom are legally minors.
"We can see that in the instructions given to the police, there is no directive to show restraint, even though they are dealing with children," LDH president Nathalie Tehio said.
24 schools damaged
More than 400 out of France's 3,700 high schools, known as lycees, were partially or totally closed on Monday morning, the education ministry said. Students protest outside the Turgot secondary school in Paris
In central Paris, dozens of teenage students demonstrated outside a school while passing cars honked their horns. Some classmates made their way inside to attend lessons.
"We're missing our lessons to give you one," read one cardboard sign outside the Turgot high school in Paris.
In Bordeaux, in the southwest, some students returned to the classroom while others continued to demonstrate in the presence of riot police.
As students call for 'act three', can France's school protests keep momentum?
Some protesters outside the Gustave Eiffel high school set off fireworks in the direction of police, who responded with tear gas, but overall the situation remained calm, AFP reporters said.
The movement has gained momentum and spread across France, at times spiralling into vandalism, including the destruction of bus shelters, the burning of school entrances and clashes between protesters and security forces. Some made their way into class
Since the start of the movement, 24 schools had been burned or ransacked, according to the education minister.
More than 5,000 people, 85 percent of them minors, have been arrested.
Protesters have also accused the police of using excessive force, and internal investigations have been opened into at least three instances of alleged police brutality.
'Parental responsibility'
Prime Minister Sebastien Lecornu on Sunday urged local authorities to prioritise filling gaps left by long-term teacher absences and unfilled posts.
The government is also pushing legislation to make those responsible for damaging public property pay for repairs themselves, instead of drawing on public funds.
Government spokeswoman Maud Bregeon defended the bill. Broken door windows at the Nicolas Louis Vauquelin vocational secondary school in Paris
"When you have 14-, 15-, 16-year-olds who, at 9 am, are burning bus shelters or – perhaps even more seriously – the high school where they study, that raises the question of parental responsibility," she told the Europe1/CNews broadcaster.
Lecornu has said the draft law could allow compensation payments to be recovered from family allowances and housing benefits while preserving a minimum income threshold.
The head of the main CGT labour union, Sophie Binet, slammed what she called a "populist announcement", which she said would "end up targeting the most vulnerable families".
(AFP)



Govt releases GH¢9.1 billion covering six quarters of DACF to MMDAs - Ayariga
Manhyia South MP charged over alleged GH¢9.85m loss to SIC Life
'I didn’t know the process would be that fast' – Nana B explains missing NPP swe...
'Who is Karbo to defy my orders?' – Buttey fumes over NPP conference clash
'Kojo Bamba can’t stop NDC' – Gbande warns NPP against shielding anyone from arr...
Fire destroys property building in Koforidua
Mahama pardons 863 convicted persons, 11 from death sentence
National Cathedral site reverts to government as Attorney-General reviews audit
NDC confirms Dzifa Gunu’s disqualification from La Dadekotopon constituency secr...
Nigeria's Tinubu confirms 32 dead after military plane crash
