This "market" (if you could even call it that) is far from transparent, objectively measuring the effect of one school versus another is hard. The most concerni

This "market" (if you could even call it that) is far from transparent, objectively measuring the effect of one school versus another is hard. The most concerning metric when I look at private schools is the severe pay differential. This isn't cause private schools are getting better deals on quality teachers, they've been self selecting for teachers that local school districts won't hire (for good reason) and get commensurate results. Being in the right social circle is the prime driver of going to private schools from what I've discerned and experienced. Most don't have diversity requirements or scholarships to ensure the classroom isn't a mono-culture of socio-economic status or race.