Teachers strike in Chicago (20 images)

Members of the Chicago Teachers Union and their supporters picket in front of Lane College Prep Tech High School on September 10, 2012 in Chicago. Chicago's 25,000 teachers went on strike Monday for the first time in 25 years after the latest contract talks broke down Sunday night with no deal to avert a walkout. UPI/Brian Kersey

Chicago teacher Paul Carrera and his daughter Abby, 7, along with other members of the Chicago Teachers Union and their supporters picket in front of Lane College Prep Tech High School on September 10, 2012 in Chicago. Chicago's 25,000 teachers went on strike Monday for the first time in 25 years after the latest contract talks broke down Sunday night with no deal to avert a walkout. UPI/Brian Kersey

Members of the Chicago Teachers Union and their supporters picket in front of Lane College Prep Tech High School on September 10, 2012 in Chicago. Chicago's 25,000 teachers went on strike Monday for the first time in 25 years after the latest contract talks broke down Sunday night with no deal to avert a walkout. UPI/Brian Kersey

Members of the Chicago Teachers Union and their supporters picket in front of Lane College Prep Tech High School on September 10, 2012 in Chicago. Chicago's 25,000 teachers went on strike Monday for the first time in 25 years after the latest contract talks broke down Sunday night with no deal to avert a walkout. UPI/Brian Kersey