That's the reason you can't compare charter to regular schools in a lot of cases. In all 3 of the states that I've lived in, charter schools have competitive en

That's the reason you can't compare charter to regular schools in a lot of cases. In all 3 of the states that I've lived in, charter schools have competitive entry, or at least an opt-in lottery. If you took only the students who can pass a test or whose family cares enough about their education to enter a lottery for a charter school and put them in one room, and of coruse they are going to do better than a group of randomly selected kids. Charter schools really only count when the student population is equivalent to the school it is being compared to, which is a lot less common.