Police were called to Filton College at around 3pm on Tuesday December 08 2009 after reports of a group of about 10 teenage girls involved in a fight.
Officers found that at least one young woman had been assaulted and she was treated by ambulance for a cut to her head.
A young woman aged 17 from Southville was arrested for assault and later released on police bail pending further enquiries.
Police investigations into the incident continue, and anyone with any information is asked to contact Filton Police Station on 0845 456 7000. Alternatively call the charity Crimestoppers anonymously on 0800 555 111.
Source: Avon and Somerset Police