Whangaparāoa College students were told to stay in their classrooms today after police received a report of a threat involving a firearm.
A post on the school's Facebook page from earlier today said all students were safely in their classrooms with teachers after the school was locked down.
Students have now been released from classrooms.
People picking up students from school were advised to wait in their cars and to not come into the school until further notice.
The school has since posted on Facebook that police had advised it was safe to release all students and lift the lockdown.