I taught in Louisiana in an open enrollment charter school. The charter system there might as well be legal segregation. We were around 90% black students, while the much bigger nicer test-in charter school that we were right next to and could see through our windows all day was like 95% white. Guess what school got all the money, athletic fields, etc. our school didn’t even have a gym in the decrepit 120 year old building that was falling apart around us. The two schools were supposed to share the athletic field between them when they transitioned from public schools to charter (post Katrina). The white school built a fence around it blocking access to our students.
The whole charter system was a mess the entire time I worked with it.