A Fire and Emergency NZ spokesperson said the first crew from Mangawhai arrived at the fire, near the intersection with Carter Rd, just after 4pm.
A road was partially closed as crews battled the blaze, which was out by 5.10pm.
The father of a 13-year-old girl on board said the news came as a “shock”, especially with this being only the second week his daughter has taken the bus.
“As is always the case in situations like this, the incident is now the subject of a thorough internal investigation bringing in independent expertise as required.”
Ritchies said given the investigation, it had no further comment to make.
People online have hailed the bus driver as a hero.
One woman posted on a Mangawhai Facebook community page that she was organising an appreciation gift for the driver, telling parents of the students who escaped to message her if they wanted to contribute.
Some commented saying although their child wasn’t on the bus that day, they would still contribute.