A special assembly was held at Mac's school, Lynmore Primary, and the Fair Go film crew showed up to surprise the creative youngster with the news.
Mac's mum and dad also went to the assembly when they were told Mac would be receiving a reading award.
"We had absolutely no idea," Mac's mum Kirsty said.
And neither did Mac but he came around when he was given the award and got to choose some friends to help open the box of prizes.
Mac's winning ad won Lynmore Primary School about $10,000 worth of prizes including an interactive learning suite, new cameras and camera gear and a cash prize of $2000.
The Rotorua family have had to keep the win a secret up until the awards were aired last night but were excited to finally see Mac's ad played on national television.