In Northland, modules have been run in Kaitaia, Dargaville, Kaikohe, Rawene, Bream Bay, and Whangarei.
The winners from each of these modules will be the schools competing in Thursday's festival.
Though the festivals are about participation, there is also an element of competition with the top two teams invited to attend a one-day tournament.
For RLN, Thursday's festival comes on the back of several years' hard work developing the game in the province.
Four years ago, league participation was at its lowest with only 655 registered players - that has now grown to more than 2500.
Credited for the turnaround has been the development of a credible school programme.
Schools taking part include:
Kaitaia Primary, Pompallier, Whirinaki Kura, Rawene/Kohukohu, Selwyn Park, Ruawai Primary, Matarau Primary, Maungatapere Primary, Ohaewai, Kaikohe West, Tautoro, Whau Valley, Tikipunga, Hora Hora, One Tree Point, Pukemiro, Whangarei Intermediate, Dargaville Intermediate, Hikurangi Intermediate, Manaia View, Kaikohe Intermediate, Okaihau Abundant life, Tauraroa, Kaitaia Intermediate, Otangarei Primary.Northlanders will be able to catch a glimpse of the visiting Kiwi and Samoan rugby league teams on Thursday at Kensington Park, as 32 primary and intermediate school teams vie to be part of next week's Four Nations test.