(The article speaks of 40 students, but as can be seen in the picture and video, there were only 4)
Via the Local (h/t Islamophobia Watch):
High school student Ibrahim El Kadi asked if he could pray while at school. “No,” said his principal.
He asked for a quiet prayer area “for all religions” and was quoted the Education Ministry’s official line.
“No one has the legal right to religious practice during working hours, neither employees nor students.”
The denial compelled El Kadi and some 40 other students in “multicultural” Ulsrud High School to protest in mock prayer outside the school’s library. Now they pray in the bitter cold of a nearby parking lot.(source)