Mr. Levin was interviewed in the band room at the KIPP (Knowledge Is Power Program) Academy Charter School in the Bronx, New York, where he is the superintendent and also one of the mathematics teachers. He described in detail the theories he and his KIPP co-founder developed for the free, college-preparatory schools. There are 38 KIPP charter schools in the U.S. Topics included longer school days, family involvement, high expectations, and focus on college.