Private/parochial schools can kick out the behavior problems and generally have a more homogenous student body, in at least one area, most often religion, but sometimes economic status. This makes it a lot easier to maintain an orderly learning environment.

Also, private/parochial schools can and do limit the number of children it will enroll. They can refuse to admit a student with handicaps, with a particular emphasis on children with neurological and behavioral disorders. Public schools must take all comers. In overcrowded classrooms learning can take a back seat to crowd control in a hurry.

There are things private schools do very well, and they need to continue to exist as an alternative.

I'm not so sure about having company-trained elementary schoolers, though. It may be in a company's best interest to train 7-year-olds to believe that organized bargaining units are bad, but I doubt that's so good for the workers. If companies want to start funding vocational schools for the kids in high school, that's different.

Regards--
Mary Anne