I attended a private school on Oahu for most of my entire pre-college education.  I then taught at both public and private schools on Oahu and Hawaii Island.  My experience with both strongly shapes my opinion that private schools provide a better education than public schools in Hawaii.  But the question is why.  I think the primary reason is that private schools do not tolerate disruptive student behavior as do public schools.  Dealing with behavior problems gives teachers the time to spend teaching rather than managing behavior and fighting undertrained, overworked, and hamstrung administrators to get the disruptors in a place where they cannot violate the rights of those who want to learn.