Teachers respond enthusiastically to passing drivers honking their horns in support as they distribute strike signage at the Chicago Teachers Union strike headquarters on Saturday, Sept

 

              Teachers respond enthusiastically to passing drivers honking their horns in support as they distribute strike signage at the Chicago Teachers Union strike headquarters on Saturday, Sept
Teachers respond enthusiastically to passing drivers honking their horns in support as they distribute strike signage at the Chicago Teachers Union strike headquarters on Saturday, Sept. 8, 2012 in Chicago. The union has vowed to strike on Monday, Sept. 10, 2012, should it fail to reach an agreement over teachers' contracts with Chicago Public Schools by that date. (AP Photo/Sitthixay Ditthavong)