The head of Rotorua Boys' High School has apologised for an attack outside John Paul College involving his students.
Boys' High principal Chris Grinter has also warned his students about their use of Facebook after comments posted on the social networking site sparked the fight outside the Catholic school.
Students from Boys' High were thought to be responsible for an attack on a John Paul College student. The incident happened about 8.30am on Wednesday.
John Paul College principal Patrick Walsh said a group of about a dozen Boys' High students arrived at a college entrance with one of the students allegedly assaulting a student from his school.
Mr Walsh said Facebook was to blame for the incident.