Each child receives a minimum of five new books of their choice to take home and keep every year, and the chance to earn reward books on a weekly basis. The programme also offers numerous special awards and a travelling theatre group that tours the length of the country annually.
Since it was founded in 1994, the Duffy Books in Homes programme has grown to encompass 519 schools and 227 early childhood centres with more than 100,000 students and 200 sponsors in 2014.
Duff will be at Te Kura Kaupapa Maori o Pukemiro, Kaitaia, on Monday at 11.30am and Kaitaia Intermediate School the same day at 1.30pm.
He will be at Pompallier Catholic School, Kaitaia, on Tuesday at 9.30am, then Waiharara School at 11.30am and Pukenui School at 1.30pm.
The author will visit Ngataki School on Wednesday at 9.30am then Te Kao School at 11.30am and Te Hapua School " the country's northernmost school - at 1.30pm.