A student allegedly assaulted two teachers at Epsom Girls' Grammar School on Thursday, according to a memo to families.
An email sent out by principal Lorraine Pound, addressed to parents, explains that a student struck two staff members.
The assault came just hours after the husband of US Vice President Kamala Harris visited the school to speak on gender equity and sports.
No students were physically harmed during the incident, Pound said.
"Staff and students involved are being supported and the matter is being dealt with."
Pound told parents that the student is not currently onsite at school.
The school is working in conjunction with the Ministry of Education, she said, and that the safety of students and staff was their top priority.
Stuff understands police were at the school on Thursday around 2pm, with an officer standing guard at the top of the street and several police vehicles parked nearby.
Around midday on Thursday, Second Gentleman of the United States Douglas Emhoff attended the school to talk to students.
Police confirmed they were called following a report of two people being assaulted at the school.
"It was following a student allegedly assaulting two staff members," a police spokesperson said.
"Police investigations remain ongoing and the student has been referred to youth aid services."
Epsom Girls' Grammar School has been contacted for comment.
- This story was first published by Stuff