Some of the assertions education historian Diane Ravitch makes about charter schools don't hold water in Hawaii, where the schools have less autonomy and funding than in other states.
In her best-selling book "The Death and Life of the Great American School System: How Testing and Choice are Undermining Education," Ravitch writes that charter schools generally rely on overworked, nonunionized teachers, avoid enrolling the neediest students and are competing with, rather than complementing, public schools.

