"It's a fun way for children to get more awareness and understanding of people in rural areas and people in urban areas," says Jago.
Each school carries out detective work, (such as Skype conversations and photo examination), to help them identify and locate their mystery match.
This is the third year the challenge has run and Jago says some schools keep in contact through a pen pal programme.
"The children realise that while there are some differences, there actually are a lot of similarities as well ... definitely some of those schools have kept in touch, which is really cool."
Information for teachers on how to run the challenge is available on the School Kit website at www.schoolkit.co.nz.
To find out more about DairyNZ's involvement in education visit dairynz.co.nz/education.