According to French Education Minister Édouard Geffray, disturbances have been reported at more than 560 institutions. Many buildings have been evacuated and closed.
France's youth is protesting against the learning conditions in their secondary schools and universities.
The University of Strasbourg is also affected.
Luxembourger Sam Elsey is a second-year law student there. Speaking to RTL, he described the situation outside his university on Friday morning as dangerous.
Within minutes, a peaceful student demonstration had turned into a brawl, both between students and in clashes between students and police.
Classes inside were evacuated, while out at the main entrance, various objects were set on fire.
He had managed to get out safely, Elsey said, because he and about 100 other students had used an emergency exit, meaning they could avoid having to walk through the protest.
Some people had been hit by tear gas, and he could lightly feel the effects himself due to the amount of teargas in the air.
The scene, in his words, reminded him of a "battlefield". It was incredibly sad, he added, because he understood the students' concerns.
The conditions in French secondary schools were not good, Elsey claimed. Unfortunately, however, it was typical in France for a cause like this to be exploited by rioters out to smash things and set fires, he claimed.
"It is a shame", Elsey lamented.
According to Elsey, all the Luxembourgish law students he knew were safe. Most of them, he said, had stayed in their flats after class.
