To be fair, that’s $153m over 4 years and the student numbers will probably increase. Let’s pretend there were 1000 students, so that’s 153,000,000 / 4 / 1000 = $38k per student per year.
For the rest of the school system, the govt spends ~$10k per student per year, see page 10, point 1.2. So Charter schools still cost nearly 4x as much and they don’t even work.
In New Zealand, I know some apps don’t show the community display name but this is the NZ Politics community.
This is the government’s description of charter schools, specifically calling them public schools: https://www.charterschools.govt.nz/what-is-a-charter-school/
As mentioned above, some charter schools are boot camps intended to deal with the more difficult students (but with evidence they don’t work). There are also specialist schools such as the new ones for autistic/neurodivergent students (jury still out on if they will help).