By Stephanie Simon and James B. Kelleher

(Reuters) – Chicago teachers walking picket lines on Monday, in a strike that has closed schools across the city, are taking on not just their combative mayor but a powerful education reform movement that is transforming public schools across the United States.

CTU
Chicago teachers walk the picket line outside the headquarters of Chicago Public Schools in Chicago September 10, 2012. Credit: Reuters/Jeff Haynes
The new vision, championed by Chicago Mayor Rahm Emanuel and U.S. Education Secretary Arne Duncan, who used to run Chicago’s schools, calls for a laser focus on standardized tests meant to gauge student skills in reading, writing and math. Teachers who fail to raise student scores may be fired. Schools that fail to boost scores may be shut down.

And the monopoly that the public sector once held on public schools will be broken with a proliferation of charter schools, which are publicly funded but privately run – and typically non-union.

To reformers, both Democrats and Republicans, these changes offer the best hope for improving dismal urban schools. Many teachers, however, see the new policies as a brazen attempt to shift public resources into private hands, to break the power of teachers unions, and to reduce the teaching profession to test preparation.

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