The book compares the standardized test scores of both elementary and
high schools charter schools with the scores for regular public schools
located nearby. It examines the position supported by charter school
advocates that charter schools should be supported because they
outperform regular public schools. Given that charter schools in Chicago
have enjoyed a great deal of support from the past two mayors, and that
they make up some 20% of all public schools in the city, Chicago is the
perfect location in which to examine this critical issue. Charter
schools siphon money and in theory better students from regular public
schools at a time when public schools in almost every big city faces
financial difficulties. Teachers unions oppose them, as do most liberal
scholars. Conservatives and big business support them, as do most
conservative scholars. The existence of charter schools is a most
divisive issue! Yet, little real data exist to allow us to properly
judge the effectiveness of charters. The current work changes that by
examining test data in a sophisticated manner that allows comparisons
between charters and regular schools. This work should move the debate
forward, but will no doubt generate controversy as well.