Permit me to discuss this topic from the viewpoint of a parent, an educator and a one-time boarder.
I attended a Unity school when Unity Schools were the talk of the town. In those days, if as a parent your child wasn’t in a Federal school, you would do all within your reach to ensure he/she gets in and if your child wasn’t in a Federal school, you just “couldn’t feel among”. The days when we wrote two main secondary entrance exams – Federal and State, the days when we were EDUCATED, the days when children from different tribes lived together not even understanding that we were different. The days when we had TEACHERS!