Great discovery today when I went into the random sampler on Census At School, I found that the 2019 data base is there ready to use. Big shout out to the team at Census At School and to all the teachers and their students who participated in the census. Without all of the students there would be no data base, the teachers make this possible.
To find the database go to https://new.censusatschool.org.nz/explore/
Select download or explore a sample to see the new random sampler page which allows you to select the variables to explore without having to download and then tidy up the file before sharing.