CHICAGO - Thousands of striking Chicago teachers will march again on Saturday to keep the pressure on Mayor Rahm Emanuel to wrap up an agreement with their union so they can end a strike that has closed the nation's third largest school district for a week.

The "Standing Strong with Chicago Teachers Rally" could be the largest demonstration against Emanuel's education reforms since the strike began in Chicago on September 10.

Labor union supporters from neighboring states are expected to converge on Chicago to join many of the 29,000 union teachers and support staff in the march.

Organizers said they hope the march will rival some of the massive rallies last year to protest against the efforts of Republican Governor Scott Walker in Wisconsin to curb the power of unions. The Wisconsin protests were unsuccessful but drew tens of thousands of government workers such as teachers.

Emanuel angered the Chicago teachers by trying to ram through proposals to radically reform teacher performance evaluations and weaken job protection for teachers whose schools are closed or perform poorly academically.

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