Constable Richard Brunton, one of seven school community officers tasked with covering 210 schools across Canterbury, addressed the more than 1300-strong roll, but would also not confirm whether an incident had prompted his visit.
"We take any allegations of bullying extremely seriously," Hill said.
"When any allegations of bullying are made, we immediately respond with our guidance team and other pastoral staff.
"I can assure the community that any kind of harassment, including bullying, sexual, religious and racial harassment is not acceptable at Christchurch Boys’ High School. The boys are well aware of this.
"We had Constable Richard Brunton come and speak to our assembly about the importance of being inclusive.
"We work with the police regularly and they are great at supporting our messages of diversity and inclusivity. As headmaster I talk consistently with the boys about respect, inclusivity and kindness.”
Hill added Chris Carty, secretary of the Old Boys Association, had spoken at an assembly last week, where he focused on the importance of inclusivity and diversity.
"Chris also acknowledged the performance and contribution to the school of our Polyfest group," Hill said.
Brunton said he worked closely with about 30 schools and his role was not confined to educating students on bullying and discrimination.
“It’s about keeping kids safe really with lots of programmes, I’m dealing with a lot of topics like drugs, alcohol, sexual behaviour . . . keeping safe."