Mr Bloor said singing helped the children learn the skill because they could add visual elements.
After being encouraged to learn songs of their own to improve their skills, resource teacher of the deaf Shelley Riddell says the children decided they wanted to create a video of their own.
Ebbett Park School was one of the first to become involved with the New Zealand Sign Language programme three years ago.
Ms Riddell said using sign language in a full school setting benefited all children, whether they were hearing impaired or not.
"It's a win, win."
Communicator Kath Sheppard says all children should be given the opportunity to learn the language.
"It would be wonderful."
The children hope their story will inspire other educators around the country to embrace what is New Zealand's third official language.
Made with finding from NZ on Air