An Avondale College staff member says having a positive case at the school is a shock

Seumanu Simon Matafai , who works for the school's gospel choir, was part of a college group heading back from Rotorua yesterday when they heard a teacher tested positive.

The school is the third largest in the country, with a roll of close to three thousand students.

Matafai says they've been sending prayers and support for the teacher affected ... and that it's important the Avondale College community get tested immediately and self-isolate.