There's some passing information about charter schools in the article.

Heads up that many charter schools are public. Rocketship (mentioned in the article) is a network of public charter schools that serves primarily low income students, and that's true of many charter schools in the state and across the country.

Success Academy is public, my son is there they are in the absolute top when it comes to math score.

SA was started in Harlem and specialize in taking kids out of bad environments (their homes) and influence them to make an effort.

It's a pretty hardcore school (7.45am - 4.0pm ish) but it definitely works well.

7:45 to 4 is hardcore? I thought that was normal?! What are non-hardcore school hours?

8.20 to 2-3ish then homework and sometimes they have soccer practice, chess, art etc. So they have long days in school.

Taking public funds does not make you a public school. Charter schools do not have the same public accountability as the public schools system.

Rules vary by state but generally charter schools are just as accountable and have to report the same metrics as other public schools.

That's certainly not the case in California which is what the article is about.