Here are some excerpts from a somewhat similar case from Denmark, from a website called Knowledge of Working Conditions):
Hanne (43 y.o.) tells one hairraising story after the other about her time as a teacher of a 10th grade class in the north of Zealand area. The pupils were mainly bilingual (immigrants).
Hanne had just graduated as a teacher and looked forward to teaching with great ambition and expectations, but things went wrong from the start.
They were upset about the demands I made on them, they were dissatisfied with the amount of homework and with their grades. It became part of my day to day life that I was stopped in the street, threatened and shouted at, tells Hanne, who has a university degree in Danish and Information Technology.
Especially one episode remains vivid i Hanne?s memory. In the class there were several groups. The worst of the groups consisted of bilingual girls with burqa and scarves. They attached a lot of importance to their grades and when Hanne once had to give one of them a low grade, the atmosphere in the class became very bad. Several of the girls got very excited, gathered around Hanne and started a very loud discussion. Hanne tried to talk the situation down, but it became so tense that two other teachers came hurrying in.
Mobile phones were turned on and suddenly 8-10 girls surrounded the teachers. They pulled them into the teacher?s lounge and locked the door. In there the teachers could hear the girls throwing chairs and tables around while shouting and swearing loudly.It was not till 1 1/5 hours later that the teachers managed to sneak out of a back door.Hanne was scared and shaken. The first weeks after the episode I had sleeping problems, my stomach hurt and I sweated. I also developed a need to look over my shoulder. Would someting unpleasant happen or would they just stick out their tongues at me.
But she had not yet experienced the worst. A few days later she could see herself in wanted posters all over the local shopping mall. I stopped bicycling to work says Hanne.
After the incident the school management called the parents (with interpreters) to a talk at the school, but here too the atmosphere got heated and the air was thick with threats. A male collegue in frustration knocked his fist in the table and was threatened with a beat up by one of the fathers. After that the school had the Police sit in at school/home meetings.
She goes on to desribe how draining it was on her resources, how the threats in the streets continued, how she calmly tried to reason with them, but somtimes had to run away from them and of them chasing her.
In the end it became too much, when they started threatening to rape my daughter, that was the final straw. I told the school management that it had to stop. Now it was not only a question of me, but also of my family.
Hanne was only employed by the school for 3 1/5 months. The school management asked her to look for another job. The episodes were never reported to the relevant authorities or to the police. I do not know why. I realised that it was a possibility, but I had just graduated and maybe that is why I did not do it.
She is to-day employed by another school and can concetrate on teaching as she says.
Why didn?t the school management report the episodes ? It really upsets me, that behaviour like that is not clamped down on immediately.