A pair of private school boys have performed a lewd sex act in front of a group of students during their lunch break.

Police confirmed they are investigating an incident involving two 14-year-old boys at an elite Catholic boys' school in Melbourne's northeast on August 23, The Herald Sun reported.

The school principal said he has spoken with the boys' families and believes 'adolescents sometimes experience challenges with choices when it comes to relationships with each other'.

A pair of school boys from an elite Catholic school in Melbourne have performed a lewd sex act in front of a group of students during their lunch break (stock image)

'This happened between a boy and another boy in a group during lunchtime and we have a hands-off policy,' he said.

After a youth officer came to talk to the year 9 students about respect the incident was reported to the police.

A Victoria police spokesperson confirmed to Daily Mail Australia officers received a report of an alleged incident at the educational facility in Bulleen.

'As the matter is under investigation it would be inappropriate to comment further,' the spokesperson said.

The principal said both teenagers were disciplined and also received counselling.