An inner city public high school consisting of poor students — mostly immigrants — has become a remarkable example of what a school can do. One hundred percent of the students graduate, and almost all go to some of the nation’s top colleges. Noble Street College Prep is one of seven in Chicago’s network of charter school campuses on which longer school days, longer school years and mandatory weekend tutoring prepare the students for college. Dress codes are part of life for the small student body, under 500 kids per school. (Read or listen to the report at National Public Radio)