The principal aim of this article is to describe and document a comparison of public and private school effectiveness in the marginalized (often referred to as slum) district of Aguablanca, in the city of Cali, Colombia. The data suggest that teachers and parents are largely satisfied with the current status of education provision in Aguablanca.…

Twenty-five years ago, the still-resonant report "A Nation at Risk" urged schools to add more time--an hour to the usual six hour day and 20-40 days to the typical 180-day ear--to ward off a "rising tide of mediocrity" in American education. Today, city, school, state, and national leaders are engaged in a renewed effort to do…