The Inspectorate has taken one case to the police - where a girl was reported to have been forced to give a snowman a blowjob while the school's boys watched. But the police dropped the investigation, saying they could not prove that a crime had been committed.
Previous investigations of Swedish private boarding schools have criticised the culture of traditional bullying, sometimes called "peer education".
The head of Sigtuna school, Kent Edberg, says that bullying is a problem at his school, but not any more than at other schools. He says that so-called "peer education" is strictly forbidden. The Children's Ombudsman has also said that the school is complying with its obligation to work against bullying.