The hangover from a chaotic party involving teens from two exclusive boarding schools includes a court appearance, a bill for a damaged hall, and a scolding from police.
Police confirmed an 18-year-old man will face a drink-driving charge after he was breath-tested leaving the Saturday night party at a rural hall north of Masterton.
An alcohol harm reduction officer will meet party organisers and representatives of the two Masterton schools involved, St Matthew's Collegiate and Rathkeale College.
In the aftermath of the party at Rangitumau Hall, a teen needed her stomach pumped, another was treated for a suspected broken ankle, and a car was damaged.
The schools' principals said the party was not a school-sanctioned event.
Police said it was likely a warning would be issued.
A council spokesman said organisers had paid $85 to hire the hall, plus a $200 bond, from which the cost of responding to a noise complaint would be recovered. Party organisers had agreed to repair a hole in a wall.
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