The ACG pupils had taken a bus from the private, co-educational school in Karaka to Clevedon.
They were waiting to be picked up by their family from Clevedon Village Hall, according to an email to parents after the incident from executive principal Danny O’Connor obtained by the Herald.
“While they were waiting, they were approached by three people who demanded their money and phones, and one of them revealed that they were carrying a gun,” his email said.
“Thankfully, the students involved in this incident are safe and weren’t physically harmed. This is a very serious incident which has been reported to the police.
“This is an unprecedented event, and we appreciate that this information will come as a shock to you, our students and the wider community.”
Hunter says he hoped the arrests would provide reassurance to the community that those who offend will be held to account.
“This is a great example of the police’s ongoing commitment to ensuring those responsible for these types of crime will be brought to justice,” Hunter said.
The 15-year-old male is due to appear in the Manukau Youth Court next week charged with aggravated robbery, and the 27-year-old female has been referred to an iwi community panel, police said.
“The investigation remains ongoing, and police can’t rule out further charges or arrests being made,” said Hunter.