if the kids going from public to charter are special needs and dropouts then it would explain the the charters performing worse and the public performing better, i think you are incorrect in saying the the urban is different, what lombardi is saying is that urban schools dont perform and on top of that they have the special needs
Again, you're talking about a minority of the charters. That doesn't explain charters in general being less successful. It's not as if all charter schools are just dumping grounds for low-performance kids. Most of them contain a mostly white and wealthy demographic, as I already showed.
Even the schools that accept special needs kids aren't special needs schools- they just accept those kids along with others, so their performance shouldn't be significantly lower than the public schools.
And even in those charters that are drop-out recovery schools, the rates of graduation and standards of education are clearly subpar- in short, they're not doing what they were set up to do relative to the public schools. Lombardo asked to take student improvement into account, and as research shows, there isn't any defined student improvement when someone from an urban public school transfers to an urban charter.