"It's not too busy today, obviously the team's pretty excited. It's good to come along and be part of this."
Whitelock said his money-earning childhood was along the same lines.
"Mum and dad used to let us help out on the farm, tidy up, really any job dad didn't want to do.
"It's always cool to come to a school, the kids are pretty excited. We wind them up a bit and then the teachers have the hard job."
The financial literacy session focussed on teaching good saving habits, budgeting and knowing about the conditions when signing up for credit cards, loans or bank accounts.
Smith and Whitelock joined two tables of youngsters for the activities, and locking heads during a game to see who could build the tallest tower brought out their competitive side.
"If you just look over there, our tower's taller than their one, we don't need to worry," Whitelock taunted.
Smith urgently told his team: "We've got nothing to lose."
The school's more than 200 students then lined up to eyeball the All Blacks up close during autograph signing.
A number of the youngsters brought their own lunchboxes and bags to be signed.
Student Karissa Manuel said the visit had made her day.
"I was so happy. It was such a surprise. Ben Smith is one of my favourite players," she said.
Liam Nguyen agreed: "It's mean. They're huge, they're like MBA players."
Teacher Billy Napier said some of the youngsters were just getting their first jobs on paper runs and chatting to their idols about saving was a real treat.
"We kind of kept it reasonably hush, and just let them know this morning so they're pretty excited.
"We try to use a lot of common sense and realism when teaching about money."
ASB GetWise programme manager Julian Wilson said it was the first time All Blacks players had taken part - and the success of their attendance was obvious.
"It's great to have role models. They're certainly wonderful role models for what we teach. It's all about getting to where you want to go, and these guys just epitomise that," he said.
The ASB GetWise programme was launched in 2009 and has taught more than 500,000 Kiwi kids so far.