Some 400 French schools have been closed and will remain shuttered on Friday as the student protests that began in high schools in the Paris region last week have spread across France and grown increasingly violent.

Axar.az reports, citing France 24, the students are protesting grievances including teacher shortages and dilapidated school buildings. The government has blamed the hard left for initiating the movement.

The movement, which began last week in the Paris region and rapidly spread nationwide, has seen teenage pupils at lycees in their final years of schooling block access to buildings and clash with police.

The students say their school hours are excessively long, conditions inadequate including overheated classrooms, and that there are too many staff absences.

The government says the grievances are legitimate but has condemned what it has described as “urban violence”.

Students have accused police of using excessive force and causing injuries by regularly firing tear gas canisters to disperse the protests.

Education Minister Edouard Geffray said “the high school student movement is being held hostage by ultra-violent fringe groups,” adding that nearly 400 high schools out of the 3,700 in the country were expected to be closed on Friday.

Many high schools have also planned to conduct classes remotely, particularly in the southern city of Marseille.

At least 65 staff members have been injured – including 40 high school principals – since the start of the movement, Geffray told BFMTV. Some 170 students have been wounded while over 100 high schools have suffered “severe damage”.