Sixty-eight head teachers have written a letter to the authorities in the German capital complaining about the terrible state of their schools.
The teachers say they are facing worrying levels of violence, poor behaviour and disruption at schools in Berlin, and they claim that some schools are turning into ghettos for children with immigrant backgrounds.
Most children at the school come from immigrant families and that poses a big challenge for teachers.
"Eighty-seven per cent of the children have immigrant backgrounds," said Ms Mueller.
"They're Turks, Arabs or Africans and they don't speak German very well. We have classes where there are no German children at all."
BBC (http://news.bbc.co.uk/2/hi/europe/7844979.stm)
Koulun turvattomuus ja alamäki on ajatuksena erityisen vastenmielinen. Kun itse olen elänyt 1960-luvun Suomessa, jossa pienet lapset saattoi huoletta laittaa koulutielle ja kouluunkin, on jotenkin välttämättömän tuntuista, etä tällaista kouluturvattomuutta vastaan pitää yrittää toimia, Hommassakin.