The group had been drinking but no drugs or boys were present, a pupil said at the time.
Royal insiders insisted the incident nothing more than teenage mischief, saying: "A group of them were reprimanded and that's the end of the matter."
The scandalous story stands in stark contrast to Princess Eugenie's adult years.
The Queen's granddaughter works with a variety of British charities and enjoyed an almost decade long romance with tequila brand ambassador Jack Brooksbank before tying the knot in a fairytale royal wedding at St George's Chapel in Windsor Castle on October 12, 2018.
The 29-year-old daughter of Fergie and the Duke of York regularly shares sweet family photos to her much-followed social media accounts, and enjoys a famously close relationship with her older sister Princess Beatrice.