Mr Day organised the conversion of a classroom into a kitchen and started off with healthy food teaching.
"With all of the health issues around food, one of the key messages is: we have got to be aware of what we are eating.
"The kids need to understand what healthy food is like, and now they are making choices. Whereas, before, they wouldn't think about it."
Each team of three was given a recipe to practise on.
"They had to work as a team, replicate the recipe, make the dish. On week one, they didn't have a clue."
Hygiene and kitchen safety - including working with knifes - was also part of the teaching.
In the final of the competition, they had to create their own healthy dish with recipe, based on what they had learned.
"And they had to budget for it, at $3 a head.
"So they had to go to Countdown online and price up their proportion of the ingredients.
"If it was more than three bucks a head, it was too expensive.
"So there was a lot of maths involved."
Mr Day said it was an "amazing journey", something he has done as a teacher at past schools.
"I wanted them to have an opportunity to learn, and what better opportunity to learn than to come to real kitchen? Some of them might end up being chefs."
He thanked Lone Star, New World and Countdown for their support.
