He was welcomed with a powhiri and told the small gathering how he had enjoyed Te Matatini.
"The girls did wonderful. It was a particular honour to have a powhiri with a couple of people from the Matatini competition."
He said his school visits followed the same format.
"I present for half of the class and the other half is questions. I usually let them choose what topic to talk about," Mr Huebner said.
"Revolutions is on the curriculum so I've taught the American Revolution, I've taught about governments, current events."
He said he taught a physics class once which "was fun".
"It's an opportunity for them to meet someone in a job they might not have thought about before," he said.
"I've been Ambassador for three years. Every week there's a new surprise."
His visit to Rotorua also included taking in the Rotorua Museum and an overnight stay at a bach on the shores of Lake Rotoiti, where he discovered seven of the Bay of Plenty wallaby population.