Mr Sharples, who once taught All Black Israel Dagg at intermediate school in Hastings, said coaches Dave Rennie and Wayne Smith visited the school afterwards to talk to pupils and helped to plant trees as part of a restoration project, a thrill for the children.
"We're passionate about the Chiefs. And I am absolutely confident we can beat the Brumbies. I'm more confident about this game than I was about the Crusaders."
He said the Brumbies would be travel-weary, the Chiefs had the home ground advantage and they were going from strength to strength.
"Our players are electric.
"They really want to do it, not only for themselves and the Waikato but for all of their fans."
He hoped there would be another parade for the "spontaneous school" to celebrate.
"It's a really exciting time for everybody."