Galina, don't get too excited..
Charter schools don't use a selective approach, they can't refuse students. It's the LAW.
and here is the result for charter schools New York
***********.nber.org/~schools/charterschoolseval/how_NYC_charter_schools_affect_achievement_sept200 9.pdf
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Человек, который почувствовал ветер перемен, должен построить не щит от ветра, а ветряную мельницу