A school was forced to help girls get emergency contraception after an end of term party descended into a chaotic orgy.
The event is said to involve a number of under-age pupils who gathered for a party at a picturesque Lancashire village in the UK.
Alison Hughes, the deputy head of the Queen Elizabeth School in Kirkby Lonsdale, Cumbria, was so concerned that she detailed the sexual activity, violent behaviour and alleged drug abuse that took place at the party in a two page letter to parents.
Mrs Hughes warned parents to assume the worse.
"We have had to help a disturbingly high number of girls through the aftermath of having unprotected sex that evening, most of whom have told us they were too drunk to be in control of themselves."
"The risks are real. Assume the worst."
In the letter, Mrs Hughes said that about 70 pupils from the school had attended the event, along with a large number of gatecrashers.
"A lot of the children who came to us needed sexual health care."
"These are children we have to protect."
"Thankfully there is a great deal of trust between ourselves and the children so they felt they could talk to us."
Witnesses said that around 200 youths gathered in and around the village hall in Wray, Lancashire, which is a few miles from the school.
The event had been organised by pupils, although the village hall committee had understood that an adult had taken responsibility for the booking.
Alan Day, the village hall chairman, said the party was out of control.
"All hell let loose at this event.”
“The children were drunk to the eyeballs,” he said.
“They were having sex in the village square standing up."
Another witness, Neil Taplin, the landlord of the nearby George and Dragon pub, said that youths had urinated against his wall and sworn at him when he refused to sell them cigarettes.
"They were a law to themselves," he said.
"It was upsetting for people in the village.”
“We are all quite close and look out for each other."
A resident involved in the clean-up said that she saw evidence of drug use, blood stains and broken glass littering the square.