From the Huttcross website:

North Island Schools CX Championships

24 July 2021
We’re stoked that cyclocross has been added to the NZ Schools Cycling calendar and are very proud to host the inaugural North Island Schools CX Championships in 2021.

The rest of the 2021 season is still to be confirmed.
Check out the School Toolkit for info on how to set up a team.

Acknowledgement: This race takes place in the Upper Hutt area, traditionally inhabited by the iwi of the Ngāi Tara people.