Thousands of public school teachers march for the second consecutive day on 

Thousands of public school teachers march for the second consecutive day on Tuesday, Sept. 11, 2012 in downtown Chicago. Teachers walked off the job Monday for the first time in 25 years over issues that include pay raises, classroom conditions, job security and teacher evaluations. (AP Photo/Sitthixay Ditthavong)
Associated Press
Thousands of public school teachers march for the second consecutive day on Tuesday, Sept. 11, 2012 in downtown Chicago. Teachers walked off the job Monday for the first time in 25 years over issues that include pay raises, classroom conditions, job security and teacher evaluations. (AP Photo/Sitthixay Ditthavong)
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