Officers are appealing for witnesses following disorder in Audley on Friday evening.
Police were called just after 10pm to reports of a group of teenage boys involved in an altercation on Church Street.
Three teenage boys were injured – a 15-year-old received a broken nose, a 16-year-old with superficial injuries and a 16-year-old who received a small puncture wound to his shin.
The two 16-year-olds were taken to hospital but were discharged the same evening.
A 20-year-old man, from Newcastle, was arrested but he has been released no further action.
Anyone with any information should message Staffordshire Police on Facebook or Twitter quoting incident number 914 of 14 May, call 101 or alternatively contact Crimestoppers anonymously on 0800 555 111.